Chirco performance offers air cooled dune buggy floor pan replacement frame heads, the frame head is the area underneath the fuel tank that your stock dune buggy front axle beam assembly bolts to, these are commonly damaged in front in collisions and are now available as a replacement weld on part, these also fit the air cooled VW Baja bugs as well
They have always had exactly what I have needed from my 1965 Baja, to my 1974 super, always willing to give advice, the staff knows their stuff, and they have a large stockpile of parts, the only place I get my VW parts.
Regardless of whatever else I've had for cars I've always had at least one VW. Reliable and easy to work on. Chirco is without question the best place around Tucson to get quality VW parts and service.