im going to be installing a t25 on a 90 crx si,im using a hf manifold with adaptor,will i be able to keep the a/c on the stock sohc motor?

 

I couldn't with the STD manifold. Either way, it'll be very hard. If the T25 is off a Eclipse, then I'd say definitely impossible.

 

It's according to what side the compressor is mounted on. If it's toward the driver's side, then definitely not. If it's toward the passenger side it is possible. I believe Drop Shop was making angled adapters to that allowed you to retain the stock DSM O2 housing and a/c.