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Click on image for the lowdown. 
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| | | Forums66 Topics128,204 Posts1,057,288 Members48,467 | | 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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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Sep 2001 Posts: 29,270 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,270 | In 1961 the heater was an RPO (Regular Production Option) or an Accessory. (pages 8 & 9) RPOs were Regular Production Options that were installed at the factory and delivered as part of the truck. Accessories were installed after delivery by the Dealer or by the owner (or by a friend/relative/neighbor or a local garage). | | |
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