Iowa Chapter Director
Join Date: Jul 2002
Location: Ames, Iowa
mandrel benders are 300,000 dollar machines and most exhaust shops do compression bends. You'd be hard pressed to find a shop with a mandrel bender. If the shop guy is saying it's a mandrel bender and it obviously looks like a compression bender I'd find a different place to do my exhaust.
As for parts of the exhaust, on an OBD II car like yours, traveler, you'll have no choice but to keep the stock cats. you have 4 o2 sensors. 2 for the operation of the engine, and 2 for the emissions control. You can buy MIL eliminators that delete your rear 02's and allow you to put on aftermarket cats or delete them completely without having to buy a computer chip. But if you're going to keep your stock cats anyway, just cut off past the front 2 cats and build your exhaust from there back. Have the shop weld in 2 o2 sensor bungs for the rear 02 sensors.
Yeah my exhaust is compression bent.
1988 Notch Mustang: - 438W, direct port n2o, t56
2003 SVT Focus: - SCT X3 tuner