There isn't anything under $2,000.
Plus you are not talking 200-300rpm. It'll be more than that. Upwards of 500rpm.
Anyway the rest of the info, funnily enough, if contained in a thread:
www.skylinesaustralia.com/forums/topic/236467-definitive-guide-to-building-300-330awkw-gt-r/
Have a long read of it. Has ALL the info you need.