just curious as to if a after market header will work with a d&d slip on or others? or do you have to use the matching can for the header? i was looking at a erion header or vance and hines

 

Probably not, but my guesses would be the diameter of the end of the header might be smaller or bigger compared to what the d&d needs to be mated with.

 

It probably will fit. Measure yours and ask the person selling the other one to measure the header. The reason I say it probably will is most companies develop their pipes as slip ons. this means that their muffler fits the stock dia pipe. they then make their headers.... to fit thier slip-ons.. so they should be the same.