2 f 2f 2f
they came with a 2f, mines done 700 000kilometers (don't know hwat that is in miles). it still starts every morning, still can cruiser between capital cities in australia, and still can chirp 33 x12.5's in second when i'm angry...
my 350 experiences.
one friend had one in a 40, rebuilt/replaced it no fewer than 10 times, then cracked the chassis from the torque, then put it into a tree.
another in a 75 series, every time we have been wheeling with him, we are always fixing/ tow starting him.
one in a family car that came from the factory in aust (we use crate 350's from the states here in holden cars) went back 5 times under warranty for burning oil, leaking oil, then finally crakced the block. the new one in there isn't running much better
if your building a drag car or something, go for the 350, but there has to be a reason toyota is still running a descendant of that motor in the outback of australia