you can do several things here. a custom made Z bracket, under one of the front fender bolts, up through the hood / fender seam and them mount antenna on top, or a diamond K 400 C mount bolted on the fromt bumper. or a piece of metal out from under the rear dirvers side attached to a piece of frame and sticking out just far enough to mount the antenna, or a home brew license plate frame mount, or ?? how about a trailer hitch with a mount on that?? can you take off the hood ornement and mount it there and replace the hood ornement when selling the vehicle9or add one then..

think outside the box, good luck