Word is that non-standard stamps and non-standard rivets(not pop rivets) were used by factory, I would be very careful how you handle this, especially in the Land of Fruits and Nuts, then again, they may be too busy to notice or the person you deal
with may not know one Stamp from another or a pop rivet from a solid rivet(I'm not talking about frog language here).

Please let us know you make out.

Ed

'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.