Clutch fork HELP

As far as I know they make 2 different ones. One is 12 1/2 inches long and the other 10 7/8 inches long

12 1/2 would be for a-body small block with 10.5 inch bellhousing. I would check with http://www.brewersperformance.com/ they should have it w/o braking it off in you.