[lunarhighway]

so all the flares do is increase drag needlessly.

these things surely don't look like they where designed with aero in mind, but fender flares don't always increase drag. especially if there's a large gap between the tire and the fender, as on a lot of older cars (maybe it's got something to do with how the suspention was in those days) anyway, inside the wheelwells there's a low pressure area so unless you want air to be sucked in you'll want to deflect it over the open wheel well, a little agressive flare at the front and the top, might be better than a smooth edge.

of course a fender that hugs the wheel tightly and smooth hubcaps are even better, but it all depends on what's there's and what can be changed.
also wide fenders at the back might make wheel skirts much easyer and cleaner to do.


as far as the airdam goes ,get on you knees and look underneath the van to see what the airdam shields, if there's plenty of stuff visible below the dam, you might want to extend it, it doesn't have to be straight, the sides can be lower as they'll shield part of the tire and the suspention. since it's metal i'll have to much ground clearance to prevent damage anyway.

also gigen the size and shape of the radiator some sort of grillbock, maybe one wich can (partly open) could work wonders for your FE