Are hooker headers ok for a 74 vette? If not, what would you recommend?

If you want to run side pipes, Kustom headers are the ones to use.

For under-car exhaust, any quality header will fit. I'd spend the extra money for ceramic, titanium or similar thermal coating. Plain paint burns off quickly and the headers rust and look like crap.

You'll also have trouble keeping them from leaking 'til you go to the speed shop and get locking bolts (about $40).

Have fun and enjoy the sound!