sorry but I think 30k for your car is a little too optimistic, not trying to diss your car but it's the market that determine the price...not how much $$$ you invested.
1990 300ZXTT Twin Greddy TD06L2-20G (No Nitrous) 822rwhp 694rwtq @ 31psi Best et/mph :10.56 / 142.47mph