I would assume that the del sol vtec a/c bracket will allow you to retain the a/c in the car. I am not 100% on the EK's. Also the p/s is a pain to make work. I know that you can, but it will not look like factory. I cannot remember what I did, but it was a combo of parts from the b20 and the EK's factory parts.

You cannot use the b20's pump because the hook is either larger or smaller than the ek's p/s line.

your best bet is to google it or go onto the b20 forums for a detailed write up.