I want to do dual exhaust SIDO with 45s. I just bought a Magnaflow #12198. I know I need to get some tips, think 4x18 not set in stone yet. What else do I need to get before I can have a shop put it on for me? I know I need two tail pipes, would a shop have those on hand or do I need to look for some? Also would I be able to buy just a set of tail pipes and not a whole cat-back system?

 

The shop has all the piping you will need. Just supply the tips and muffler. Or just the tips for guys like me that run no muffler.

 

Unless you want mandrel bent tailpipes, the shop is capable of bending you tailpipes for a light cost.