60#s were a deal literally too good to pass up, i was actually considering going e85 but then realized id kinda lose my ability to go on long road trips and stop anywhere for gas also heard mixed answers on needing to replace the stock fuel pump when going to e85. the cars got 153k stock trans and ive been driving it since i got it with 85k
could have got 3.5 instead of 3.6 but by the time i asked for the 3.5 it was already gone. I don't actually have any tuning experience myself so i'm leaning toward not risking my only car.
If it were me, I'd sell the 60's. Stock injectors can be used down tona 3.0 pulley or smaller, depending on a few details. If you have no plans to go smaller than a 3.2 or switch to e85, the stock injectors will do everything better.
2001 GTP Drag Car - XPZ, Tischler heads, Upsidedown M90 IC'd, e85, Gen V, 2.3 w/ 5%OD
2005 F350 6.0 - studded, deleted, tuned
2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold