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Mod | | | Forums66 Topics128,035 Posts1,055,528 Members48,425 | | 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 2000 Posts: 1,177 Red dot, center of chest ... | | Red dot, center of chest ... Joined: Mar 2000 Posts: 1,177 | It's a little hard to measure with a pipe sticking out of it, but it looks like it's about 3 & 1/4 inches. Maybe this picture of the filler grommet will help? I got it from this page at American Classic, our main sponsor. If I were you, I'd buy the grommet, then measure its diameter (inside and out) so you can cut the hole properly. You're going to need the grommet anyway. | | |
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