stock y8 with I/H/E/VAFC II and have been running the 55 dry shot from the Zex kit, but want to know what you guys would suggest if I wanted to run a 75 shot. Obviously adjust the timing, but as far as maybe a new cam, springs, retainers? What would be the best thing for my motor to throw on that would help in not causing detonation from the higher shot? Or would I even need to bother with any other mods, for example, IM, TB, etc.?