I have new one piece fuel pump extentions available and in stock. First is the type that fits Casale, KB, Donovan and others. These come in 2 lengths. 5.400 and 5.900. They come with the bearing for the pump driveshaft, and o-ring. $245.00 ea. Second is the type that fits RCD gear drives. It is smooth like the ones above,and also has the bearing and o-ring. I have the 3 inch and 5 inch styles. $245.00 ea. Call 626 815-8815 9 to 5 PST. Mastercard and Visa accepted.