i have a 79 chevy 4x4 with a broken grill. i bought a grill off ebay for a supposed 73-80 but it is thicker than my original one. it is 2-3" deeper than the original. it is a nice grill and would look good but do i have to change out the whole radiator support to make it fit or what. the grill is out of a 73-74 truck with a 454 it has gmc in the middle and 454 in the lower right hand corner.