1990 corvette muffler dimensions ???????

[topless82vette]

My friend bought a TPI 3.5 inch catback for his 1990 corvette with the L-98 .... But he hated the mufflers that came with it. He decided to go with a 3 inch side inlet muffler with 3 inch center outlet to us stainless LT-1 style tips ...... so what muffler (dimensions) will fit back there, I'm asking cause the car currently has muffler eliminators so I have no idea what will fit.

 

[topless82vette]

Also .... He prefers flowmaster mufflers so which series would give him a little more then stock sound. this car will soon have a 450 inch small block with tpis headers and a procharger so it needs mufflers that will keep the noise down.