sort of lie a box of internet legos?
Iwas thinking of something like the Z engine calculator but for the car...like you could selectL24 as the engine, BW T-5 tranny, R160 rear end and what length driveshaft would have to be made and what would have to be done to mount the transmission,etc...we could start it as a database and people keep adding to it.
like this: http://www.ozdat.com/ozdatonline/enginedesign/