Yeah, The Flex-Pipe Doesn't Work...
IMHO
You might have better exhaust performance with a properly sized single exhaust than a dual on the 2bbl.
From AccurateLTD.com (Accurate Exhaust) website for A Bodies. Note pipe sizes, the Y pipe is the same for all (I BELIEVE) since you are only putting 1/2 of the flow through each side of the pipe.
(See option menu for applications)-A-Body HiPo Exhaust Syste
CAY6774-63-74 A Body 273-318 Complete Exhaust System
They also have a dual exhaust option.
-1967-74 A Body Exhaust Systems (Small Block)
and if you can use the 340/360 manifolds
IMHO
You might have better exhaust performance with a properly sized single exhaust than a dual on the 2bbl.
From AccurateLTD.com (Accurate Exhaust) website for A Bodies. Note pipe sizes, the Y pipe is the same for all (I BELIEVE) since you are only putting 1/2 of the flow through each side of the pipe.
(See option menu for applications)-A-Body HiPo Exhaust Syste
CAY6774-63-74 A Body 273-318 Complete Exhaust System
They also have a dual exhaust option.
-1967-74 A Body Exhaust Systems (Small Block)
and if you can use the 340/360 manifolds