Same model year Chevelle interchangeable with a cutlass? I would assume they are but better be certain before I order some.

 

Better check with the supplier. I'm pretty certain that when I got mine from Custom Autosound (admittedly some years ago now) they were Oldsmoblie-specific. In any case, you should be prepared to do a few modifications before they're useable. Mine required reinforcement to keep the speakers from making the thin ABS buzz.

 

they sell them for the cutlass why not jsut get those unless there used in which IDK.

good point about buzzing, this might be a good place for an application of dynamat

 

Same for all A body

 

The chevelle ones are the same. I plan on adding some insulation as well as painting them with SEM landau black. Mine are black already but they are too glossy and look like plastic.

 

I agree on the too glossy finish. I added one screw to the passenger side kick panel to stop some rattling but didn't have any issues other than that, and I am driving them with a 100 Watt amp. It's easy enough to correct any vibration, rattling, or buzzing.