yeah, screw the 350, put a 427 in there. once you work out the cooling issues, you're left with a motor with a couple times as much torque as the 2F and less weight
don't get me wrong, i love toy motors, but the F/2F are boat anchors in my opinion. also, they're pretty much a chevy stovebolt 6 anyhow, not totally toyota-developed. but then again, 350/smallblock swaps are waaaay overdone too.
hell, i'd put a ford engine in there...392 windsor sounds about right...