The original Boss cars used narrow springs and some of them had very unique rear end assemblys.As with all racing lots of cheating was going on and no two cars were the same...The Pontiac cars ran chev 302's.Alot of the Pontiacs used Camaro sheetmetal as well...Mustangs hid override traction bars under the rear seat.Camaro's had the subframes moved.....it goes on and on.
They have all been upgraded as far as engine,brakes and ign goes..They still race them in vintage racing and that's all I care.They are out of my price range...
I just built the car for fun...
No idea who made the finned cover..