68 fender on a 67??
If you have 69 front fenders the front 69 grill is your only option unless you want to relocate the headlight buckets.
And if you have a 69 grill it stands to reason that the buckets were relocated if the front fenders are not 69 fenders.
Does your hood have block letters D O D G E centered on the front. Always on a 67 but also some 68s (maybe also 69s)
Are your door lock buttons at the rear edge of the door or about a foot forward of the rear of the door?