I am not either. I have a freshened up 290K mile 305 from a 96 Express van in a 99 Tahoe that is making 260 rwhp/280 rwtq with a 218/218 @ .050 Lunati flat tappet cam, the crappy stock Vortec intake manifold and fuel system on it. Somehow amazingly it has the stock spider in it and it is still working. Pulls like a freight train from 3,500-5,800.