Will this Mac 4-1 exhaust fit?

[Guest]

This looks exactly like the exhaust which fell off my bike today, just the megaphone actually, after a mechanic missed a bolt when changing my tire (yes, I should have just taken the wheel off myself!)

That said, I've looked at many photos of this exhaust and it looks exactly like my old one, I am just worried about the 36mm port size so I thought I would ask here first:

Does my 1982 GS1100GL have 36mm ports?

My bike already had the center stand removed to make room for the exhaust

I found this seller on ebay

http://www.nichecycle.com/ProductDesc.aspx?code=003-0601&type=0&eq=

There is virtually no info on the manufacturer website

http://www.macperformance.com/store/product1.cfm?SID=3&Product_ID=716

I have only one day to get this before I leave for MotoGP at Laguna Seca and I wanna get this right.

Thanks!

[littleroot]

FYI, the shop made good and got me the Mac exhaust and it is pretty sweet, especially because this one allows for a center stand. Yeah baby! And I found one of those on ebay for $25. So happy now. If I had to complain it is that the new exhaust is too quiet - I loved how my old one announced I was lane splitting. :-)