What header would you recommend for the xB?

I was thinking of the Megan but what others are out there for a good price?

megan is the cheapest by far , only otheres around the same price would be used dc's or used el prototypes.

There all the same correct? Same setup, same size tubing, just different names, right?

The only difference I've seen was that I think one is 4-2-1 and the other is 4-1. Does it make a difference?

most are 4-1 and the 4-2-1 give more torque and the 4-1 gives more top end . but the main diff is material/coating , the megan is stainless the others are mild steel , the dc is ceramic coated.