ok so i have a hahn 3'' catback exhaust in planning on getting the ZZP headers with highflow cat...i dont want to go 3 inch i want to go 2.5 for the ZZP headers/downpipe...since the hahn bolts right on to the stock exhaust im figuring it will bolt right onto the ZZP but i see that ZZP has alot of size/bolt options...which one will fit just like it would the stock exhaust and what you guys think about the 2.5'' with a 3'' catback? thanks any info will be much appreciated

 

if you are getting the zzp header and downpipe combo get it with the 2.5" downpipe and it will bolt up to the exhaust.

 

thanks alot stryder just wanted to make sure it would before i ordered it and it didnt work that wouldnt be a good time at all haha