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Old 04-21-2020, 02:24 PM   #2

Bigtime53's Avatar
Drives: 2015 ZL1
Join Date: Mar 2013
Location: Oklahoma
Posts: 1,920
Your best bet is to call one of the shops that polishes and ports the throttle bodies and see if they could help you. Look on the vendor site here and give them a call. I doubt you can get that from a GM dealer. Good luck
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