I go to
jerrysgaskets.com for as complete a parts list and supply of parts for the ZR-1 and LT5 as you might find anywhere 👍
His first page lists a complete category of parts that he has available 
Jerry is A26B
Another member that has provided me many aluminum machined items such as oil filter caps, coolant reservoir caps, 87/91 octane fuel line brackets etc is
Carter (Carter200) .......Carter's machining ability is perfection 👍
Another thing you might consider which I have done in my CF Sticky is consider that individual parts sometimes vary a bit in design making the year ZR-1 you have (90,91,92,93,94,95) significant
