do i raise or lower ride height to get more

I had the poly strut rod bushings and they squeaked and groaned like hell. Replaced them with Moog replacement parts.

I never did see any appreciable improvement going from rubber to poly in the handling department.

FWIW, the orignal bushings I removed from my 68 Barracuda (and the 73 Dart I stripped) were split and the replacement Moog's were split. The thing that was different was the large washers that retain the bushings that came in the kit. They were marked "this side to bushing" which resulted in them curving away from the bushing instead of cupping them.