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By punched through, I am assuming you mean pulled the elongation out so far it broke through the edge of the casting? And only on a single hole? Pictures might help for suggestions, but just off imagination I would suggest if you aren't adept at welding try taking it to a machine shop and have them put the metal back. While you're there, give them the dimensions needed for the holes, and they can set it up for you. I think this method cuts the least corners and saves you the most time/headache. Not the cheapest method, but it will make it right.
The most cost effective might be just ordering a new TB, or the TB you want that is already set up for you, if the above repair method might cost you similar or more.
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2019 1SS1LE M6 Shadow Gray Metallic
ProCharger D1X Race Kit - 4.25" Pulley || GPI Pistons/Rods - ACL Bearings - ARP Hardware || LME Timing Chain Guide || Katech C5R Timing Chain || Katech OE Spec Billet Oil Pump || OE Ported Heads || CHE Trunnion Upgrade || BTR 220 Cam - BTR .660" Dual Springs - GM Racing "Caddy" Lifters - BTR 3/8" Pushrods (7.825") || ATI Balancer || LT4 Injectors || LT4 HPFP || JMS BAP || DSX Flex Fuel || LT2 Intake Manifold || LTH (Catless) || Stainless Works Redline Series NPP || 91 + 8oz Boostane
7/26/2024 Tuning in progress
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