Cliff--those aren't even close. Those are traditional Cobra style, also used on the early Mk I and Mk II GT40. The Gulf cars used a completely different style, pictured at the start of this thread, and I don't know of any retail-level sources. Gelscoe and other UK suppliers probably have them. I think they were also used on the Lola T70 and other similar cars of the period. I will be interested to see what Rick comes up with....
For the record I am NOT the manufacturer, but I will be a retail supplier of these when they are ready to go. I suspect they are 30-60 days away from being available.
We do manufacture and supply some parts such as the Superformance GT40 A/C improvement seal kit, the "toll window" vent seals and the Cobra alternator plug pigtails, etc. We try to provide quality, needed items at a fair price point.
Didn't Kress supply them but they were breaking? They looked little me the normal SPF supplied units that been heated and bent with a hammer for the rears and ground off for the fronts. The Gelscoe units were $2k when I checked a few years back and they were not especially helpful once a mentioned they were a SPF car.