The final body style for the M series, an open roadster, arrived in 1978 as the TVR 3000S (marketed in some places as the "Convertible", and referred to at least once as the "Taimar Roadster".)
Like the Taimar, the 3000S was mechanically identical to the 3000M; the body, however, had undergone significant changes.
Only the nose of the car was the same as the previous coupes, as the windscreen, doors, and rear end had all been reworked.
The redesign of the doors precluded the possibility of using wind-up windows, so sliding sidecurtains were instead fitted.
These could be removed entirely and stowed in the boot, which, for the first time on a TVR, was a separate compartment with its own lid.
The boot lid was operated electrically in a manner similar to the Taimar's hatch.
Its design was not finalised by the time the first cars entered production, so the first several cars (including the prototype) were built with no cutout for boot access.
The final styling tweaks and the production of moulds for the fibreglass were done by Topolec Ltd. of Norfolk.
The styling of the 3000S was revived in a somewhat modernised form later, with the 1987 introduction of the TVR S series (although the S series shared almost no components with the M-series cars.)

The windscreen and convertible top had been adapted from those used on the Jensen-Healey roadster.
Because Jensen Motors had ceased operation in 1976, the windscreen and sidecurtain designs were done by a company named Jensen Special Products, which was run by former Jensen employees.
The design for the convertible top was finalised by Car Hood Company in Coventry.

One of the minor undocumented variations found on M-series cars is the presence of a map light built into the upper windscreen surround of the 3000S. It appears to have been included only on a very small number of cars built near the end of the production run.

When production of the 3000S ended (with 258 cars built), it cost £8,730.
Reportedly, 67 of these cars were in a left-hand drive configuration, and 49 were exported to North America.
The final body style for the M series, an open roadster, arrived in 1978 as the TVR 3000S (marketed in some places as the "Convertible", and referred to at least once as the "Taimar Roadster".) Like the Taimar, the 3000S was mechanically identical to the 3000M; the body, however, had undergone significant changes. Only the nose of the car was the same as the previous coupes, as the windscreen, doors, and rear end had all been reworked. The redesign of the doors precluded the possibility of using wind-up windows, so sliding sidecurtains were instead fitted. These could be removed entirely and stowed in the boot, which, for the first time on a TVR, was a separate compartment with its own lid. The boot lid was operated electrically in a manner similar to the Taimar's hatch. Its design was not finalised by the time the first cars entered production, so the first several cars (including the prototype) were built with no cutout for boot access. The final styling tweaks and the production of moulds for the fibreglass were done by Topolec Ltd. of Norfolk. The styling of the 3000S was revived in a somewhat modernised form later, with the 1987 introduction of the TVR S series (although the S series shared almost no components with the M-series cars.)
The windscreen and convertible top had been adapted from those used on the Jensen-Healey roadster. Because Jensen Motors had ceased operation in 1976, the windscreen and sidecurtain designs were done by a company named Jensen Special Products, which was run by former Jensen employees. The design for the convertible top was finalised by Car Hood Company in Coventry.
One of the minor undocumented variations found on M-series cars is the presence of a map light built into the upper windscreen surround of the 3000S. It appears to have been included only on a very small number of cars built near the end of the production run.
When production of the 3000S ended (with 258 cars built), it cost £8,730. Reportedly, 67 of these cars were in a left-hand drive configuration, and 49 were exported to North America.
TVR M series