Advice/Warning
My build is much like Dan's, except I am doing my own welding and fabrication. I don't feel like torturing myself or you by itemizing every expense, suffice to say that I'm easily 25 grand deep with micra purchase, and all parts (however I can safely say that no part came from a low quality brand).
Please please please follow some sensible advice and do what Majiga said:
(adding loads of info for persuasion
sr20 throttlebody plus adaptor fabrication - $150-250
rb25afm, $50
custom cold air intake with pod filter, $50-200 depends on how u make and materials used.
a modified fuel rail, $100-300 depends on repurchase from forums or fabrication at shop.
extractors, $300ish
safc 2/neo or emanage blue or nistune chip flash to tune in the performance, $400-1000 can you tune?
new sports exhaust, $500?
coilover suspension, $1000 or thereabouts
upsized front disc brakes, $500 with old brake calipers, new discs and pads
front and rear sway bar, panhard rod and front strut support bar $1000 probably but im spitballing this price.
Sharper deg cams, $400-1000 old, ground or new your choice.
lightweight flywheel, $100-500, machined oem wheel or buy new japland gear.
Exedy HD clutch for that fun 'extra bite'
After all that the car is hella fun to drive and has set me back (on my daily driver, not my build car)
$2000 initial car purchase
plus approx $6500 all up. over a year or so.
The only other option is that HKS kit and even though I hunt import monster and ebay japan, I've only seen it once in the last year online...