There are several differences. The biggie is the timing belt. The '93 timing belt has to be changed every 50,000 miles instead of the 70,000 mile interval on the '94 and on cars. The control arms are a little different as well but that can be an advantage. The ball joints can be changed out on the '93 where on the '94 and on the entire control arm must be changed if the ball joint goes bad. The wheels are 4 bolt instead of a 5 bolt pattern.

I'm sure there are other differences as well but it seems that parts are readily available.

...Lee