66 exhaust suggestions ??

[lswonmatt]

im putting in a SBC backed buy a TH400 into my 66 GMC with long tube headers and was wondering if anyone had any suggestions about a y pipe.

I was wondering if a slip fit ory pipe for an ls long tube header system would be able to clear under the transmission if not ill have to figure out another way to run my exhaust. I want to run the y pipe and a black widow muffler and exit the pass side in front of the rear tire any suggestions ???