Originally Posted by jgs11
I would go to a different exhaust shop, cause your downpipe should be 2.5", oh also, most exhaust shops can do the 3" downpipe but it will be press bent or worse wrinkle bent, i plan on doing a 3" downpipe in the future and im gonna buy two 45* mandrel bends from summit or jc whitney and have them welded together and have a very similar setup to the m&* downpipe that sol
The stock 2.5" DP is crimp bent, so a 3" crimp bent DP will still be a benefit. but if you can get a mandrel bent 3" DP made, for under $100 I say go for it. Then get a 2.5" or 3" Magnaflow/Carsound high flow catalytic convertor to go with it from www.justmagnaflow.com
or ebay (both places have free shipping on purchases over $50). The cat will cost less than $65 including shipping, and with the install (recommend having it installed at the same time as new DP) the total cost of the new 3" mandrel DP, new cat and installation should be around $210 or less.
With the crimp bent DP everything should cost under $150.