The owners of a local Mustang speed shop put and Aston Martin V12 in an S197. I know they had it at SEMA but don't know how many ponies they finally got out of it. Check the link/vid in the middle of the page called Vanquish'd, that's what they call the car. It sounds unreal.
http://wmsracing.com/
http://wmsracing.com/