To find the exact payload capacity for *your* 2001 Ford Ranger SuperCab, you need to:
* Check the sticker: Look for the sticker on the driver's side doorjamb. It will list the Gross Vehicle Weight Rating (GVWR) and the Curb Weight. Subtract the Curb Weight from the GVWR to get the payload capacity.
* Consult your owner's manual: This manual should also specify the payload capacity for your specific truck.
Without knowing your specific truck's configuration, I cannot provide the payload capacity.