Should i do it or not?

Unfurtunatly the 360 is too big, would make the car handle like crap. heck the 2.3 is pushing it! Looks as if the 360 with a rear sump truck pan will fit, with a slight relocation of the radiator. Exhaust is going to be interesting. As for the spitfire its going to be around 1850lbs and 325rwhp. so it should move pretty well with the 2.3.