[sparks]

I also have a 460 built by perf. eng., they installed the msd-6AL w/adjustable rev. limiting chips. Your max h.p. and tq should be below 6k rpm. I keep the 6k chip in until I get used to the car. I'll put the 7k in after break-in. A good BB should be able to hit 7k now and then w/o a problem, but you really shouldnt need to go above 6-6.5k unless u miss a shift.(oops)!