There is an excellant article on bump steer in the April 1998 POCA newsletter. It includes dimensions of said shim. From my experience with Panteras it seems there are many upgrades and modifications that are touted. Some are good, some not. My car does have a bump steer problem but my steering rack is off the car being rebuilt now and I will not know whether shims will help the problem until I can measure the elevation relationship of the rack end joint to the tie rod joint. If shimming the rack will help the bump steer, my car must have had really bad bump steer when the spring spacers were installed when the car was new. Just my $.03 worth! By the way, if your not a member of POCA perhaps you should join.
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