I drove this car from North Carolina to Massachusetts in under 10 hours. I don't think I ever dipped below 100mph. A day later it wouldn't start and I noticed the crankshaft pulley had snapped. After that I just ran into more problems that were probably caused from beating an 18 yr old car to death for 10 straight hours. I sold this car to a friend who had had the under carriage rot out while it sat for a year. This car held up great in NC, but couldnt deal with the winters/salt of MA.
There's a reason Z cars are sought after by auto-crossers. These cars can handle, and 170 HP in a 2800lb car will push it pretty well, get it up over 220 hp and you've got a serious machine. My car didn't have power steering or power brakes and I swear the road has never felt the same since I lost it. You really feel like you're driving, and keeping it under he speed limit becomes a problem! The one issue I have with this car is that there is only one place supplying parts for this car, and they are REALLY expensive. $500 for a 4 core radiator?
It does seem surprising that they didn't have power brakes or steering, bearing in mind they were not exactly cheap cars when new.
All '77 280Zs came standard with power brakes but were not available with power steering.