Some updated pictures.

i had major cooling problems with my 64 with a 360. i ditched the original /6 radiator in favor of a later 2-row 22" radiator, helped a little but not enough. so i decided to throw money at the radiator and had it recored by my local shop, its still a two-row (limited by the tiny bottom tank) but with a lot more tubes and fins. just by finding a different core they TRIPLED the amount of water the radiator holds. this solved all my problems. i'm only running a 17" flex flan and a cheapie universal chrome shroud, also a small pusher fan on front of the radiator. stays at 185-190 all the time even in 100 degree air temps. i have some cheapo ebay pulleys which are underdrive pulleys. next step i think would be to go to stock pulleys off a heavy duty motor from like a van or truck or something.
-tim