ZL-1 #2 was modified at the Harrell shop where they installed Sanderson headers and cut up the exhaust system and did a few other mods.
The photos of the car on the lift at the Harrell shop, show no tail pipes but at the track it has the tail pipes.
Ro McGonegal drove it to the track with closed exhaust. ( That explains the license plate) They first made runs with closed headers then ran it with open headers.
McGonegal wrote in the 1969 article that it just had headers installed but in the 1998 article , he revised this saying he recalled them making changes to the exhaust system.
That seems to be the case looking at the original photos.
The 1969 article mentions the car was going to be race prepared for Shay Nichols so sounds like they were not concerned about keeping the car original.
The plan may have changed later to sell #2 to the guy in Oklahoma, then do another car for Shays. (#5)
I have not heard much about ZL-1 #2 as far as what was done with the car after leaving the Harrell shop.
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