At the gathering a few years ago, Gordon Killilbrew commented on my car being an early car, (#74) He said, you have a early car, 14.
I thought he'd misread the vin number, i repeated #74, He explained
the first 60 cars produced were not for sale to the general public, but
went to GM exec's, and favored dealers.
Some of the differences were the the shafts already mentioned.
Glass Headlights, he also explained that "extra time" in the engine build and overall, to insure they were perfect examples of ZR-1's.
the earlier cars are also faster, sexier, and cost more coin.
most came with fuzzy dice.