Not going to happen . Even little things like screw placement would cause issues for you , assuming you could squeeze everything inside the case . And assuming you avoided blocked airflow routes and thermal problems with however you made it all fit . There are some of customized parts inside your MBP , with no easytoswap alternatives on the market that ' ll work . It ' s not like a desktop machine . Plus , with so many components soldered to your logic board , that ' s an entirely different problem . Anyhow , build quality for a lot of other laptops has improved . Look at them , or accept the Apple limitations . Other options might not be as nice , but few companies can afford the manufacturing investments Apple has made in their efforts with aluminum alone .