Flowmaster is known for a quality product. It is going to cost you some $ to get the answers to your questions. Put them on with clamps first. You can experiment with different lengths of pipe and using adapters can determine if you want bigger pipes. Your project sounds like it will be a blast to drive. HRL is very familiar with performance builds but he does have a propensity to get under your skin. He really is a good guy at heart but you have to gnaw your way through a lot of gristle to get to it. Good luck.
Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne (Emily)
‘39 Dodge Business Coupe (Clarence)
“I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line"! Hug a cop!
USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
| 
