Thanks everyone!
this is helpful. There are holes in the front fenders along the cab side (inner fender) that I assume must attach to the cab just in front of the doors? They were already on the fender (does not mean it is correct) and I did not do any metal work where these holes are. I did replace both lower front cab areas in front of the doors, however, I do not recall any attachment holes there. (although they may have been rusted out). I am assuming the only attachment of the fenders in the front is to the doghouse? Nothing to frame. The doghouse sits on the frame cross member and is secured there? Is there a gap/bushing or something that separates the bottom of the doghouse to the frame cross member? sorry so many questions.

I am dry fitting the body panels and making any "minor" adjustments to get my gaps good and make certain all attachment points are ready so there are no surprises or significant adjustments needed later. Once I get the panels all aligned (I spend way too much time on this as in 40, I am sure panel fit was no where near what I strive for). plan is to align panels, do any last body work, remove panels and prime/seal (again), then I will cut in the insides and anything that cannot be reached once reassembled. The next time the body panels get put on, has to be the last...........then block the outside panels and paint.
thanks in advance

Doug