2.5 to 3.0 Exhaust

I have a 69 B'cuda w/ a stroker low deck BB. My buddy is a TTI dealer and runs a perf shop. We fabbed a 3" x-pipe from the headers to Flowmaster 50 series mufflers on to TTI 3" tailpipes. It's all tucked up nice and those tailpipes fit perfectly. I have never had any of the exhaust scape the ground. Done right it's pretty easy to fit 3" on an A-body without issue.