Long time lurker. Have a couple of S10s that I mess with. One is a 99, 4.3, 5 speed truck. I've had nitrous on it for several years now. Ran a 100 shot on the stock tune forever, now starting to tune on it with HPT. Next one is an 89. It has a stock L05 and a 700R4. I've decided to put Vortec heads on it and change over to the Ramjet roller cam. I have gathered tons of great info here and decided to register and start asking questions. Glad to be here!