they should be the same, the main difference between the pre-standard and standard hinges is that they have 5 screws instead of 4, i believe the only other difference is some trim and a film iso reminder on the back door. If you've never used a C3, they have some of the tightest fitting, hard to open film doors so I dont think light seals will be a problem.

I'm not overly familiar with that camera, but if it has a simple pin type hinge, it should be as simple as knocking it out. You may need to double-check the light seal after as if it was hand made, not everything will be the same

I use a 1962 Argus C3 Standard as my main camera. I recently bought an earlier model for parts and it's lens. Is there any way I can switch the film door off the earlier camera onto mine? Best idea i've come up with is knocking out the center of the hinge.

Switching out film doors on an argus C3?