What's the point of swapping in a 4200? Might as well swap in an LS.

I don't care that it's an inline engine. That's not the point. As I said above I had a 3.2L inline pushing 300 hp/tq and I'd never think of putting it into a classic car. That misses the point of having a classic completely.

How about an S54 BMW engine? 350hp/ft-lbs out of a 3.2L. Why not slap that in? Because it's not a classic engine.