I never noticed, but my '84 GMC has a Hickey roll bar.  I think its a great looking dual tube bar that fits the truck just right.  I found out that they are out of business and I think they went out in 1989 I was told.  Anyone with any info on Hickey truck parts, let me know.  Its a real nice piece and I would like to learn more about anyone who sells old Hickey stuff or what the heck happened to the company.  I inserted a photo of it on my truck to show you!  It was on there when I bought it, but I wish they still made em.