It's about damn time you got some decent gears in that thing
Sounds like you are running right around the same that my old 302 P head/exploder intake combo, 12.7@107 with a similar 60ft. What tires are you using? There is probably another .1-.2 in ET in there with some suspension work, but a 12.7 sure ain't bad for a very basic mild combo like that.
btw, I like my new gears too, I went from 3.73's in the stock diff to 4.30s and a spool
