2 questions:

1) i am trying to diagnose the rumble on acceleration, between 0-5mph. happens every single time i acclerate from a stop, albeit less when i make a hard right turn from stop. both the driveshaft toroidal bushing and the tranny output shaft bushing "appear" perfectly fine - no cracks or anything, no looseness at all. there is rotational play in the driveshaft, however (i have no idea how much play is normal for this car). any advice?

2) how much improvement (whether performance or comfort) can be expected with front suspension bushing swaps? are the fcpgroton swaybar and control arm bushings as good as one can expect? mine are currently cracked but not busted.

thanks so much!