I made myself a prototype set of roof racks today. I fabricated them from some 1.5" stainless tubing that was left over from a railing install. The mount is fairly simple, a 1/4" x 20 carriage bolt through a clamping assembly made of 1/4" stainless. The welds are quick and dirty because I built the whole set in about an hour while everyone was at lunch.
They're 48" wide and really solid!
I drove home with these doors on at 40 - 50 mph with gusty trade winds blowing and they felt very stable. I must say, the VX roof is a very stiff assembly of metal!!
I may do some with 1.25" square tubing with a thicker wall and use the same mount.
If some of you are thinking you might want racks some like this, I'll be selling some VX stuff I've dreamed up real soon on a website I'm setting up. dinofab.com ... not there yet, but it will be. Anyway, bear in mind I'm in Hawaii. Shipping from here is best done with USPS. 5 days at the most, but it allows me to sell on the net and not have to make YOU pay an otherwise huge shipping cost. So anyway, stay tuned....