Critique/suggestions on 273 engine build

IF you could get an honest 350hp from a 273, it would be a PIG on the street. It would need 5.38 gears and a tiny convertor or 4 speed and would have a very narrow powerband. Gee, you could get that with a junkyard 360 with a cam and a little head work(and I do mean little). Chivalry is dead, embrace the modern days.