Is there anyone with a Mariah (or other Supra) of this vintage that could measure the diameter of their exhaust outlets for me. The exhaust "flappers" on my boat have had it. I am 150 miles away from my boat at law school. I will be returning home next week, but i'd like to have the parts waiting for me when i get there as opposed to measuring when i get home and then having to wait for the UPS man.

Thanks,
DKJ