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| | | Forums66 Topics128,180 Posts1,057,165 Members48,465 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Mar 2010 Posts: 118 'Bolter | | 'Bolter Joined: Mar 2010 Posts: 118 | Do the aftermarket A/C-heater kits utalize/mount with any of the original mounting holes from the stock heater? What about for the hoses? This will be for a '57 GMC. I'd like to fill in any unused holes in the firewall if i can and keep it as clean as possible. Do they typically use the same fresh air intake hole on the kick panel as the heater does? | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | totally depends on the aftermarket unit you get, usually you can use the hose holes, although which ones you have present depends on what heater the truck originally had, you'll find 'stamped' marks on the inside insulator pad for different configurations - better get the heater you want before filling any holes  Bill | | |
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