Originally Posted by techwhiz
Anyway, we digress. The e30 M3 with the S14 motor was a very unique car.
Agreed, 100%. The argument was made that the S14 was somehow more unique than the S50 or the S54, which I don't really feel is the case. All are good engines, and all are largely based on stock BMW engines, themselves no bad thing. The S65 is the only M3 engine to not be based largely on a regular production motor, and likely the last. What that means is entirely up to you to decide.