Quote From KJ earilier post about this topic

"two different types of b16a1 intermediate shafts:
s1, same intermediate shaft as 90-93 teg so 90-93 teg axles work great.
y1, this one is a little tricky, a stock 90-93 teg axle will be too long, this might be why you have a cut/shortened on on your car. The easier solution is to get a 88-89 teg axle and put the 90-93 teg inner joint on it. That is basically what an sir axle is. There is also a place called raxles that sells these modified axles already made."

hope it helps