I have a 1975 SR5 pickup, chassis code RN23. Unfortunately, I need a front left fender, and I'm having a hard time finding one. I was able to find a supposedly OEM fender from Japan on Amayama, indicated as compatible with "RN20, RN22, RN25, and RN27." For some reason, Amayama doesn't have chassis RN23 in their database at all. I know that there are a lot of similarities between the RN20, RN22, RN23 RN25, and RN27. Are the fenders and other body panels the same across these models? Can anyone point me toward a resource that details the differences?

And of course if anyone has a hot tip on a fender, I'd be grateful.

 

I have noticed that the newer models had a different fender lip im assuming for a inner fender. And also the bottom corner near where the valance mounts there is a small hump on some and a hole on others