Buy a 3/16 plate, 1X3. Half a foot of 3/4 square steel tubing, and you need a pro model fork. Now you just break the legs off your pro fork. Grind the metal around the crown race into a circle. Now weld it to the plate. Now cut the steel tubing to like 4 1/2 inches and weld them on the plate. Cut the fork tube below the threads and now weld on a new tube. Simple.