Round port long branch manifolds are not being re-popped at this time. A set was for sale here awhile back, 2.5K...
Interesting, perhaps why I've gotten a few PMs here and at PY forums about mine.
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