I have a 1968 429 in my 65 f100. I also have a gm style HEI dizzy. I have been playing with timing and different curve kits as well as adjustable vacuum advance. I was curious what the forum wud recommend to be the best distributor for my engine. I have dual 2,5" exhaust, 3.5 gears and C6 performer intake and 650 avs2 carb.