It didn't hit when the engine wasn't running with the original spacers, it was only once the engine was running that it hit, most likely vibrations, combined with close tolerances. There are 4 points of the tray mounting, adding a 1/4" was overkill, and there is really no way to check it under those conditions unless you started it.
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1970 GTO Judge Tribute Pro-Tour Project 535 IA2
http://forums.maxperformanceinc.com/...d.php?t=760624
1971 Trans Am 463, 315cfm E-head Sniper XFlow EFI, TKO600 extreme, 9", GW suspension, Baer brakes, pro tour car
https://forums.maxperformanceinc.com...ght=procharger
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