nikescar:
I guess I don't understand. In Forza 2 you could put race engines that are available as crate engines in run of the mill cars.
Yes, but all of FM2 swaps (that I can think of) came out of other cars featured in the game.
ie: 7.0L Corvette race motor from the C6R swapped into a '02 Z06
The difference here is that the 5.0 cammer is not featured in any car in the game. Therefore its not like it's being swapped out of a donor car or anything, it's a powertrain that is only sold separate from vehicles.
This opens the door for a bunch of sweet powertrain swaps on GM, Ford and Mopar vehicles using crate motors that were never featured in vehicles.
ie: 770hp 572ci Bick Block Chevy.

"Forza Motorsport 3: game so good no sexy lady can divert."