I'd look at going the silvia route using s14/15 front struts hubs brakes etc. I had s13 fronts mocked up in mine but hadn't sorted the steering out so i'd assume s14 would work the same. I changed my struts for 280zx in the end so didn't make it work. S13 bottom arms bolted in by drilling out the lower arm mount points in the cross member. The s13 bottom arms increase track by about 50-60mm PER side not a big deal if you are using fwd offset rims but i heard a rumour s12 bottom arms could be used to reduce the track increase. but i guess you want more concrete info before you start spending money :)