Re: 69 Mach1 roof oil cans. Is there supposed to be a roof bow in it?
have a mach one in shop right now...and no they don't have central roof support.
A 67.68 one is thewrong shape.
The reason it oil cans is that the roof skin has been stretched, and will need CAREFULL shrinking and panel beating. Stopping this is NO job for a backyard amateur.