If you are throwing it out I’ll take it. General consensus is non-C clip are superior to C-clip type all else being equal. I’ve only rebuilt one BOP rearend and bought an install kit with it that included necessary seals. I’ve had no leaks and no issues with it.
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