Fender grille and inner Panels

[MIKESAD50]

First off using Absolute Sheet Metal Inner fenders and Radiator support.
Having trouble getting the baffles between the radiator support and the fenders where the grill bolts to the fender to all go together.
If I bolt the baffles to the radiator support and the fenders there is about a 3/4in gap between grille and fender and also the lower panel under the grille doesnt line up with the baffles or the grille.
Are the Chevy and GMC fenders different in anyway? looks like according to Classic Ind. catalog they are the same.
Anyone used all these components together? absolute produscts and have some pictures of the assembly?
Is it possible I have a grille from a bigger Chevy truck?
Bought this truck in pieces
Thanks for any help