Header outlet spacing question

[cashflyer]

This should be easy for somebody to answer, but I couldn't easily find a clear answer when searching.


My 78SC had SSIs and a custom fabricated muffler system that consisted of Bursch collector pipes and a Flowmaster muffler. The muffler system is now shot and must be replaced.

Are the outlets of SSI headers at the same width and position as stock exhaust - so that I just order a regular off-the-shelf muffler system for my car? The Bursch pipes I had look like the 75-77 set in their ad. (bottom right of the picture below)

Adding to the confusion, I see the M&K (pn MK-MNEB-21-T) says it is for 74-89. Is the outlet spacing the same for a 2.7, 3.0, and 3.2??

Thanks

[javadog]

I am having a little difficulty sorting out your question. I am assuming that you are saying that your car still has the SSI heat exchangers and you need a muffler to fit them. If that's the case, you need a muffler that fits cars up to 1974, with two inlets.

The muffler that originally came on an SC had a single inlet on the left side, which will not work with SSI heat exchangers.

JR

[RarlyL8]

SSI are early 911 stock replacement heat exchangers. Any dual inlet muffler built for stock early heat exchangers (pre-1974) 911 will work. All are the same distance, 2.0L - 3.2L.

[cashflyer]

That was exactly the info I need!!
Thanks to both of you!!