I saw this black TTZ for sale on a Sunoco gas station lot on Swanson Rd (west of Telegraph rd just south of I-696). Looks pretty good with Stillen side and rear valance and after market wheels/ exhaust. It was at night so I can't tell exactly the condition. Has Cali. plate though. No phone number or asking price so you have to drive there and ask the gas station owner.
from my crappy camera phone:
1990 300ZXTT Twin Greddy TD06L2-20G (No Nitrous) 822rwhp 694rwtq @ 31psi Best et/mph :10.56 / 142.47mph