Mid-pipe-to-axleback muffler Gasket question???

[Spades]

well, there are various gasket materials on the market you can buy in sheets so you can make your own gasket...also, there are metals you can use in thin strips as gasket material, pliable alloys such as copper.

personally, i just chopped off my exhaust after the cataletic converter and welded on a long glasspack the lenth of my sedan...i dont like gaskets...they leak.

edit: ensure the material you purchase is for high temp aplications and not the cork crap for valve covers.