Thanks guys
I was hoping it would have been just a wee bit bigger diameter - My screw holes already in there right now are 3" apart - the old fixture was ~ 4 x 2.

Edit - I found this - I'm sure they are all the same size, but this is the only one I found where the size is actually spec'd

(also found 60's Jeep which is 3-3/4, but would require a pretty big hole to accommodate it)
Attachments
park-lamp.png (889.61 KB, 96 downloads)

Last edited by D'Ecosse; 04/24/2023 11:34 PM.

'51 Chevy 3100 Truck - OEM 216 Engine; three speed column shift transmission
6 Bolt disc conversion with dual master/vacuum booster
12V alternator conversion.
235 engine in waiting grin