All the right Mods and IMO that car is track worthy. With all those goodies that car is worth more than the asking price. That's my opinion! My car has almost 140,000 miles, when something breaks we fix it. Usually upgrade the busted part. DON't be afraid of the miles. It uses a Timing Chain, not a belt.
If you like the car just make him an offer, even at that price you coming out ahead. Good find