Jeep 4.0 in 69 Barracuda

Regarding exhaust.
Has anyone used a Dual outlet 40 series Flowmaster (In my case Single In Dual Out) under an A-Body? Is there room for two 2in (or 2.25in) pipes to come over the axle on the driver side, then split with 1 going towards the passenger side and the other coming out the drivers? Of course this would be around the fuel tank. And may not be a good idea.

Until I can run a full dual system, I am going to go with 2.25in head pipe to Flowmaster performance Cat Converter. 2.5in between Cat Converter and Flowmaster. From there, single 2.5in out the driver side rear, or dual 2in or 2.25in in a traditional dual setup.

The Cat Converter is the correct one listed for Jeep Cherokees with the 2.25in Inlet and 2.5in Outlet.