Ok my rocker arms keep hitting my valve covers, or coming off and thn i get all this backfire through the carb. So i took them all off and put thread lock on the studs. How much do i need to tighten the bolt down so that they wont hit the valve covers? Is there anything good about a TH350 transmission? How do i test my ignition module to see if its shot? And I bought my truck with a 4" pro comp lift, and i want to put in a 6 or 8" lift instead. What mods will i need to do? How much are lenghtended drive shafts, Transfer case drops etc. Its mostly an on road vehicle for now, until i can afford to beef up the drivetrain. Thanks guys, i love this site, you all have helped me out alot since ive had this truck.