[William]

The 'special batch' of Pace Cars you refer to are most likely the 130 Z11s present at the Speedway. Known in the hobby as 'Festival Cars', they were provided to speedway and USAC Officials, celebrities, etc, used for parades and other media events during May 1969. Approximately 65 of the VINs are known. They were produced March 3-12 [02D body tag date] VIN range N607xxx-N612xxx and have body numbers beginning with 268.

The only "true" Indy Pace Cars are the two used to pace the '500' N607587 and N608347. Both survive and are well known. Festival cars and all others are correctly referred to as replicas, not reproductions. Your Uncle's Z11 is one of the replicas, not a festival car.

Interesting, one of the Festival Z11s has the lowest VIN.

Pace Cars are very popular in the hobby, always seem to be a few at major auctions. Your Uncle's car may make for a nice restoration project. Its value will be in direct proportion to how rusted it is, particularly the trunk floor, cowl and rear frame rails. Hope it has its original drive train.

IMHO, I would separate the car and the NOS parts. Two separate deals. Make a list and get someone knowledgeable to establish the value of the parts.