so this is what i am looking at and i was woundering if there is any one special kind i should get for this and if so give me some help please, this is all for an 01 raptor stock w/ 12t, K&N proflow. thanks for any help you can give

HMF Slip on exhaust
High Performance Cam
Durablue Eliminator 2+2 Axle
A-Arms +2
Alloy Nerf Bars
BeadLock rims
Razr 21x11x9 6PLY
ProFlow K&N Intake

 

If you're going to just get the slip-on, I would go with GYTR or MBRP, these have seemed to be the best for just slip-ons, if you are planning on going big bore later, I would go with a good full system, such as MBRP, Yoshimura, or Curtis Sparks. As for the cam and piston, I would recommend Hot Cam Stage one if you are only going 11-1, 12-1 go with Stage 2 and new valve springs. While you have it apart I would get the head ported. With all of your motor mods, the only person I would deal with is Bob Craycraft. PM him if you want to ask him some questions, his name on here is MBRP. Good luck