77/78 is to be a black jack and base, 79-81 is blue. blue bottle . the red bottle was early f-body and all camaros. the build sheet will tell ya if the car has the space saver or the full size tire. my 77 is a hood bird delete car , but had the chrome sail panel emblems. Norwood car.
How do you know that for sure about the jacks? By the way, I think that's correct but I've seen so many blue ones in 78's. I've always wondered and your explanation makes sense. I know for sure, with a sample size of one, that black jacks were installed at Van Nuys. What I don't know for sure is if blue ones were also installed there in 78, and if blue ones were installed in Ohio in 78.