hi everyone has any body put a speed kit on a 300 and what differaces did you find and also have you seen any performance mufflers for a ac 300 as well. thanks for the help[img]i/expressions/face-icon-small-smile.gif[/img]

 

What do you mean when you say "speed kit"? Is this the same as a power kit? I am interested in a power kit and an exhaust as well. Good question!!

 

yes its the same thing smoke im getting the same lifters that you got except there from quadtrex