Hemi Swap Info

I think one of the main issues a database such as you propose is going to confront - is the incredibly wide range of different combinations and therefore 'tunes' you will have to detail.

Even the difference between a carb-style throttle body induction and factory EFI is significant...then you have to consider the ignition managment system, which version of the motor, cam shaft variations etc.....

You'll end up compiling a heap of data...but most of it wont be transferrable.

A better idea might be to simply list working combinations with appx pricing and a performance/difficulty rating system?