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Click on image for the lowdown. 
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| | | Forums66 Topics128,026 Posts1,055,410 Members48,422 | | 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 2007 Posts: 2,644 Shop Shark | | Shop Shark Joined: Sep 2007 Posts: 2,644 | According to the OSPHO website you can apply any primer over it so anything approved to go over POR 15 should suffice. But the greater question is why not just use OSPHO everywhere and forego all that POR 15 stuff? | | |
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