[Gilby]

This thread is timely as I am currently having an undercar exhaust system built for my ERA. I could never stop the leaks on the original 4 into 1 collector so I went to restrictive exhaust manifolds about 3 years ago. Combined with the two inch pipes and DynoMax mufflers I'm sure it was restricted even with a mild 428. I have been thinking this over for a couple years. With the ERA there is very little room for a muffler so choices are limited if you want 2.5 inch in and out. Its the width of the muffler that gets you. If you want it to look close to original then you really need offset inlet on the drivers side in order to move the muffler forward to approximate the position of the original. A Hushpower will fit but it needs to be moved rearward and have an S bend in the inlet pipe. I went with a muffler from Stailess Specialities with offet 2.5 in and center 2.5 out. This muffler is very narrow and seemed the best fit. They also do custom sizes. I will try to use 2.5 inch pipes out the rear over the axle and angled up like an original with chrome tips. I may need to neck it down at some point in the rear. I don't know yet. I spoke with my fabricator today and he is almost done with the headers. I have not even seen them yet. What do you guys think looks best 2 inch or 2.5 inch tailpipes? Will 2.5 inch tips look out of place on an original looking street car?

Thx