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Simple. Leave the mufflers there and just install a pair of small glass packs in the tail pipes.

FWIW, sand them if you want, but if you really want the job to last as long as possible, blast them.

Yup. But be aware, there's two kinds of VHT high temp paint. What you need goes to 2000 degrees. It has FLAME PROOF written right on the label. I would get the primer too. It also says FLAME PROOF and goes to 2000 degrees as well. It's kinda high for spray paint, but well worth it. If you cannot...

Yeah I aint a big fan of header wrap either. They could be anything. Maybe if you unwrap them you can find a brand name or part number.

Coolness. Congrats on your new to you headers.

If your motor is a mild to moderate street engine, I would jump all over those like a disease free, pre plastic Pam Anderson.

NO coating lasts forever, I don't give a damn who does it or how good it is or what it is. They last a while if it's the good stuff and done correctly, but none of them last forever.

Yup, headers is one area where you don't want to cheap out.

I was gonna get those, but too many people around here said they fit like hell so I got Dougs instead. Good luck. I hope they work for you.

http://www.summitracing.com/parts/dou-d452/overview/make/plymouth/model/roadrunner/year/1969

That's awesome. Because in the book, the are listed NOT to fit a 383 in those cars. Almost makes me wanna send back my D451s. Almost.

Simple solution. Get the right headers. The D452s are not the right ones. D451 fits your application.

Usually, if a muffler is reversible, it says so in the description. That's a big feature. It does not say that anywhere on the Dynomax site. http://www.dynomax.com/mufflers.php?muffler=ultraflowelded I would call them to be sure.

Cliff, you need to understand how mufflers work before you make that decision. I know you've seen those honyecomb shaped walls that line the interstate system in some places. Those walls are designed to keep sound within the boundries of the interstate highway and not let it get out. A muffler...

Positioning a muffler "as close to the header as practical" is just wrong. It's wrong in terms of flow and it's wrong in terms of sound. Exhaust gasses are best muffled or baffled after they have cooled some. Also, if there is any drone or sound coming from the muffler, guess where you just...

Did you go to the Cherry BOmb site and read about the Vortex? They supposed to be very cuttin edge in terms of flow and they don't cost an arm and a leg.

Here's another option. http://www.cherrybomb.com/Catalog/Categories/vortex.aspx

Magnaflow makes some good stainless ones. Dumped at the rear with a big block and 3" pipes, you're gonna need something quieter than what we've been discussing. I think you would like these: http://www.summitracing.com/parts/mpe-13219/overview/

They are good mufflers. Especially if you don't mind being conspicuous. I really like how they sound.

I can't see where Summit's welded aluminized mufflers are inferior to anybody else's welded aluminized mufflers. Just not seein it.