I'm trying to find a good 2 1/2" header back exhaust system for my coronet. It seems hard to compare one company to another. As none have the same exact components, or use the same material. Flowmaster uses stainless, but judging by their generic pic, doesn't seem to have the correct style muffler or tailpipe clamps, and is priced around $730 shipped. Borla seems to have a good rep, but i can't find a kit price. Accurate exhaust products is the manufacturer of the swivel exhaust extensions, that i bought for my schumacher headers. Since accurate made the swivel extensions, as well as schumachers tri y headers, i contacted them about a header back system. They have one, it supposedly has the correct hangers, but its made with aluminized steel, and priced at $1100 + approx $172 shipping. And, the tail pipe is reduced to 2 1/4 " . $1272 shipped, for an aluminized system seems high to me. At first i intended to buy black widow 14x9 250 mufflers, the correct style muffler clamp ( in 21/2 ") correct tail pipe hangers, and hiring an exhaust shop to cut bend & weld it all together. Now, black widows 14" mufflers are on back order. With corona- who knows when they will be available again. Accurate did say they have it all in stock. I haven't checked availability with flowmaster yet. Any suggestions ?