#1. Gears sure(remember youd have to do both front and rear ~$800), but touching the heads wont do much, especially what youre looking to spend on them to get them done properly. 3V heads flow VERY well, and unless you were cramming 17-18psi+ through it, I wouldnt touch them.
#2. Your car technically isnt even done yet! You ran that time with a shit clutch, and not driving it the best. Plus, there is alot more power in the car with a tune!!! (Feel like Im beating a dead horse here).