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Re: [GMCnet] Passenger Side Dash Upgrade [message #326467 is a reply to message #326466] Wed, 29 November 2017 09:53 Go to previous message
Ray Erspamer is currently offline  Ray Erspamer   United States
Messages: 1707
Registered: May 2007
Location: Milwaukee Wisconsin
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I just took a whistle grinder to the old dash and made the openings round. Then sealed up any places where air could escape into the back of the dash. Each new vent has foam tape around the back sealing it too.

Ray Erspamer 78 GMC Royale Center Kitchen 403, 3.70 Final Drive Holley Sniper Quadrajet EFI System, Holley Hyperspark Ignition System 414-484-9431
 
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