318 build up
The real hard engines from the MoPar camp to build are the really small ones. 273 S/B and the odd ones like the small big block, 350,361 Low deck engines or the 383 RB engine, not the Low Deck "B" version.
I don't think you'll have an issue with engine performance but I'm not sure how it'll compare to the Ford your used to dealing with.
I'm not trying to be a pentastar flag waver or Ford basher here, but I never really met a nasty 302. Apples to apples.
The late model stangs have everything we wish for. Roller cams, overdrive, for the time, a decent computer controled fuel injection. (OH, and the car itself is something the Mopars just didn't have at the time. A rear wheel drive ony car.)
Older stangs/Fords that have only 3 spd's and carbs are at a serious disadvantage next to an equally built more morden stang. Apples to apples and/or as close as you can get it.