Hi Jay - I'm no expert, but I'll chime in with my experience. One of the most important items to check up on is the fuel injectors. The earlier 300zx's of this generation had fuel injectors which would inevitably fail as a function of time; not mileage. For example, when I bought my TT with 36k miles 2 years ago, one of the injectors had just been changed. About a month later, another injector died. I had it replaced at a local shop to the tune of about $600 (!). Then I put it into winter storage, only to find another dead injector the following Spring. At this point I called Nissan, and they strongly suggested that I change them all out and forget about it. They directed me to this site, where I purchased the entire kit:
https://www.z1motorsports.com/fuel-syst ... -4558.html
When all was said and done it was a fairly costly experience, but I now have the comfort of knowing that my injector issues are a thing of the past. And after 2 years of ownership, I can finally drive my car!
. The complexity of the car is often overlooked by owners who simply want to fix a single issue for the lowest price, which results in something else going wrong. He still gives advice, but I fear Rich has saved his last 300zxtt.