Your car is built to the correct width. The front fenders have metal braces underneath then that are in line with the headlight bar holes and bolt to the sides of the frame. Without the braces in place, the front fenders will be very "floppy". The way to install the correct width headlight bar is to loosen off the bolts that hold these steel fender braces to the frame so that things will get a bit "floppy". This will let you spread the fenders far enough apart to get the bolts that hold the headlight bar in place--thru the headlight bar, thru the fender, and thru the corresponding hole in the fender brace---put the nuts on and leave them loose, not tightened. Then gradually retighten the bolts which hold the steel fender braces to the frame. After they have been tightened, (gradually, a bit on each side, alternating as you do it), then tighten up the bolts in the headlight bar.---A little prayer helps as you do this----