wish i had the ability to even test against stock specs. although at least my front beam is stock.
bill, i misread your initial post a little. i think your logic makes sense. i do not have a sway bar in the rear yet (still have to decide how i am going to mount it). i am curious to see if it reduces any oversteer considering the rest of my setup. i don't have my alignment setting handy and doesn't matter much since they couldn't do squat with the back. here is what i have:
FRONT:
stock beam with stock rubber
2.5" drop spindles
3/4" sway with urethane bushings
1.5" spacers
17x7" rims with 205/40's
set to .5mm toe in or so
no shims
REAR:
late 951 arms and spring plates (~+3 inches on track)
stock spring plate rubber
urethane control arm bushings
no sway currently
hellacious camber and the moment
toe: don't recall, will have to look up