You do not need the pistons, I ran the 420 cams with the BAK and PCS monster pro pipes and there is no comparison to stock,you do not need a programer the stock works great and the MPG is a little better.
S&S has them and you keep your stock cams and if I remember they are cheaper.LOL I should be cursing myself. I had a little bit of a bug about this. Now I'm jonesing to get it in the mail already. It may be too late already to do this year. At least with the PCS. They want me to send in my cams and wait to get them back. Would like to get them, pay core charge and send back for refund.
so you're gonna do it then??I'm wanting to do both Cams and HC Pistons. Problem is SS's combo requires 92 octane and is not readily available in my area. I can get 91 everywhere, so I'd need to carry some octane boost everywhere I go. PCS's are the same for pistons and about $100 cheaper for the cams.