I really like these, and have acquired a couple of them. I have not heard of leaks, but I have heard complaints of rattles if not secured tightly enough. I considered welding studs to the cab instead of drilling holes, but the usual technique of stout sheet metal screws and silicone sealant seems to hold just fine in the junkyard examples when I removed them. They were tightly in place and did not have rust in the holes. Scott, there is no interference with the stock cab clearance lights. I am not a big fan of drilling holes, but I like them enough to say it’s worth it since I would always like to have one on each of my trucks when finished. The holes could always be welded closed to repair them if you did happen to change your mind. I think the hat brim look lends a lot of character and harkens back to the antique era when many cars came with exterior visors.
SHORT BED 4-DOOR DIESEL: 1986 F350 4x4 under construction-- 7.3 IDIT ZF5+GVOD
STRAIGHT SIX 4X4: 1981 F150 2wd to 4x4-- 300 I6 close ratio diesel T19, hydroboost brakes, Saginaw steering
BIG F: 1995 F-Superduty under construction— converting to 6.9L IDI diesel ZF5+DNE2