I believe theyre these: http://www.summitracing.com/parts/MTT-3793R/

I'll be at my dads tomorrow and I'll take a look

id look into pinion angle. now that i have mine set up right and the rear sway bar is in i get 0 wheel hop on the street. just burns tire like its job.

and you had tire hop before the pinion angle change. only changed that and its better?