The one setup I am familiar with is using round port long branch repops from RARE with their E heads. I'm fairly certain that E heads do come in D-port exhaust versions also though. Flow numbers were comparable from my recollection.
1968 400 Coupe, verdoro green, black vinyl top, auto 1969 GTO Judge coupe, Carousel Red, manual 1971 Trans Am, cameo white, auto 1970 Buick Skylark Custom Convertible 350-4(driver), Fire Red, white top, auto 1972 Buick GS Stage 1, Royal Blue, black vinyl top, auto
I know they have started making the d-port version but I'm looking at buying an older set of round ports and I was hoping to be able to just swap over my long branch mans and not have to spend the additional dough on new ones or headers.
