I've had 66 and 67 GTO's. They always felt to big for me. Rather have my Birds. And your top goes down. When the top goes down the price goes up.
If it's a swap you think you'd really like, I'd swap for an afternoon, maybe go on a joint cruise in swapped cars, drive your home afterward to think about it. Then you can decide straight up.
Wanting a Custom fit in an off the rack world.
I don't have time for a job, I just need the money.