post your race vehicle
My 1975 Duster, mostly street car now but moving it more towards racing. built 340 w/ pro shifted Hemi 4 speed, can't get an 8.75" rearend to hold up with slicks so I have a Dana 60 on order from Dr Diff to prepare for next season. That and a new CroMo driveshaft and 1350 joints both ends should be the ticket for me to see what my combo can do when I'm running a clutch that doesn't slip!