If i had kept the car, I would have definately done the front mount next.
http://cgi.ebay.com/ebaymotors/S13-S...QQcmdZViewItem
Then I would have Dropped off the ECU with vr4 ever or whatever his screen name is and gotten it socketed. Obiviously there is some research to do with this, to ensure it get's socketed for the proper chip, but the RB20 ecu does not require the daughter board like some nissan ecus.
then search for either livedit (it's a different name now), bikirom, oe something like that. It is the nissan version of uberdata. It's an open source ecu editing program.
Find a good deal on a used t3/t4. Search nicoclub rbforums.
http://forums.nicoclub.com/zeroforum?id=135
Because there is one specific trim your looking for, but I don't rembember it off the top of my head. It will most likely be ext. gated, so get an adaptor box made with an Ext. gate flange.
throw on a walbro 255 and a nismo FPR. Go try to convince someone to tune it for you.