Unless you guys have repaired a lot of cab or front clip damage and it didn't go so well, you should not have to alter the cab height via the cab mounts away from factory specs. If you change away from specs, you will create brake, clutch, and accelerator pedal nightmares.
I have built a number of Frankenstein ADs and have run into your problem many times. The following should get you lined up.
-You need to put the grille in place. It plays a part in the overall alignment.
-You need to loosen EVERY SINGLE NUT AND BOLT from the toe board forward. ALL OF THEM including the ones which attach the grille to the front clip.
I would suggest that you completely remove the bolts which hold the rear of the inner fenders to the toe board and parking brake bracket. This will allow you to move the fenders fore and aft much easier. You can easily put those bolts back in last, as they do not affect alignment.
-Tighten or loosen the fender skirt-to-dash support rod nuts to move the fender fore or aft.
-As you move the front clip forward or rearward to line up the hood with the fenders, be sure to lift the rear of the fenders at the cowl area to close the gap under the hood side.
-Tighten the fender-to-cowl bolts first.
-Keep checking the alignment between the hood with front clip as you continue tightening the rest of the nuts and bolts.
Hope that helps getting you where you need to be.
Carl
