there is a program on the net I found on these boards...Rollout charts for pan cars...Need one for a 88 pur gear......Thanks!

Try this out for size.

http://www.hobbytalk.com/bbs1/showpost.php?p=2586620&postcount=6

Here's a link, http://pdxracing.sytes.net/rolloutcalc.html

thanks guys...got it