I have a 91 RX7 that needs a motor. Is there a reputable reseller of used motors for these cars.

it depends on what you want. n/a, turbo, or twin turbo? 2 rotor or 3 rotor? what will the car be used for, racing or dd? what came in your car?

some companies have a few rotaries, other companies have others.

Welcome to nopistons. You might want to post a thread in the "for sale/wanted" section, or in the 2nd generation forum. There are quite a few sources for these motors. Good luck!