Thats a tough call, because of the marker lite diff, they are unusable on a 71 to be correct. So from some people's perspective, punching gill openings in a set of 72-74 fenders would DECREASE their value. But if you wanted to make up a 72-4 with gilled fenders, well then that would be just the ticket for ya.
71 Gilled fenders, as we all know, are BIG $$, like 4k+ a set for nice ones. Nice 72-4 fenders go for $350-500 a piece. I'd say if I wanted to build such a gilled fender 72-4, i'd pay 400-600 a piece for them. Thats a total shot in the dark! LOL
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