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Old 11-22-2019, 09:09 PM
Joe's Garage Joe's Garage is offline
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Join Date: Oct 2016
Location: Las Vega$, NV
Posts: 637
Default stock 1979 Firebird front studs are .564" / 14.3mm knurl

So if your rotors are factory-style replacements, they should take the .570" knurl diameter aftermarket studs.

Can't help with an aftermarket long stud part number. Sorry.

Good luck!