as above confused on this ??

 

You can use it in either. It's either a B16A or a B20 mount, all the other ones are 3 post.

 

I believe they also came on some integras as I got one awhile back to fit my hasport n it was off of a gsr(however somebody couldve possibly swapped it with a b20 i dont know) but mine ended up actually needing the 2000 si post mount. So if ur trying to buy mounts ur best bet is to contact hasport or whoever n send them pics to c which one exactly it is cuz the bolts r at diff angles.

 

I'll actually check for u next chance I get n find a way to measure it to help u figure which one it is if u don't figure it out by then. cuz I have both post mounts in my garage right now.