You probably could find one that is long enough to span the roll cage, but I think you'd be better off having a local welder make you one! And keep in mind that with a rack bolted to your roll cage, you won't be able to use a soft-top or anything. And anything up there is liable to get hit by tree limbs! Friend of mine did a project jeep, a CJ, and welded up a 'steel mesh' rack that bolted in behind the front seats where the rear seatbelts bolted on the cage. Looked like it belonged there-but with bolts he can remove it if needed. Still can use a bikini top or whatever to cover the front seats in rain.