I just realized the drivers seat that the PO included is incorrect. I should have dry fit it before paint. dammit.
Always!! Maybe several times, just to be sure!
Is the M38A1 seat the correct one for the later CJ3B?
I don't know much about the early CJ-5. I did google dimensions and found this thread:
http://www.earlycj5.com/xf_cj5/index.php?threads/82933/Notice some familiar names? Oldtime shares dimensions that show the tub is a bid wider ( I would have guessed that but didn't know). I would deduce from that the seat dimensions would also be wider. Are you a welder, or in my case, do you know a welder? You may also be able to horse trade for the correct 3B seats (may be a challenge for the side mount leg).
Also do you have a line on the passenger seat resting bracket?
My bracket looks different. Studying the images on Seats:
https://cj3b.info/Seat.htmlIt looks like your passenger bracket hole locations matches the posted image (not sure what that screw through the hat channel support could be for). Note where the pivot brackets are mounted (I also see a difference between the early/late passenger legs). You may need to get creative to make things fit. I've had to fabricate. I took some of my drawings into a shop and they cut parts and welded them up for me.
If your passenger seat reaches up to the edge brackets, you have an early seat - it could still work. See where the bracket would need to be and ensure the back left leg contacts the tub.
The driver's seat should have attachments similar to the images from the 3B Page. Make sure the back left is secure and go from there.