Hi,

So my Vance and Hines exhaust is a bit rusty.. the headers are bent out of shape and from my previous pictures you could see the odd shape where someone did custom welding.

Well I found a stock exhaust headers to muffler tip for only $150. Thing that concerns me is that having the jets already enlarged and the air box drilled and ignition advance on there ( i bought a +6 hoping for more gains but it matched exactly to the one i found there so i'm assuming its advanced ).

Will going to stock exhaust mean i need to adjust my needle clips? Thanks in advance !