I made 262rwhp 328rwtq with ported E7s with stock valves. I used a Performer RPM intake, .513/.513 218/224 114 cam, 1.7 rockers (for .545/.545 net lift), BBK u/e shorty headers, o/r H-pipe. I had all the power robbers like a/c, power steering and the stock clutch fan. I used the stock airbox...