I still don't get it. You won't be able to tune them with something that's not designed for a Honda, at least not without unlimited funds. IIRC hondata's piggy-backs will work on a SH, but you'll lose ATTS and have to do an OBD-I downgrade. A complete engine management system could be used but it'll probably run you into the ground and be pretty worthless.

You'd be better of cleaning up and selling the car for something a little easier to deal with, though everyone likes a challenge I can't see suggesting your plans to anyone.