Congrats on the buy!
The aftermarket cage... I dunno who made it. I know back in the 80's they used to race these things and there were a few people making cages for them. I have seen that design before, but don't know who built it. There are also a lot of people who have built different cages on their own over the years, such as the case of your other one. I don't really care for the way they did that cage, but that's a personal opinion. It IS better than the original 77-79 rollbar tho. Definitely safer, if it was done right.
If you want to know what year models you actually have, there is a sheet that lists all of the numbers from the different years, including engine numbers. Just ask, and I or someone else can get you the link to it....
