hi i have a 01 raptor that blew its trans well i bought a new trans along with a wisco 11/1 piston .50 over,stage 1 hot cam,k&n filter,p&p, and stock exhaust with no spark arrestor. what kinds of power improvements should i expect to see?

 

You will feel some of an improvement but probably not too much if you are going to use stock exhaust.

 

Stock exhaust on the Raptor is very restrictive. You will notice alittle power but not much untill you atleast buy a slip-on pipe for it.