Alvin,
I had similar work done to my old girl a while ago.
New rear springs (4) reset the Koni's in the rear,I went up
by 25% in the rear (I cannot feel the difference)
and I replaced the upper/lower bushes and all the rubbers
with the Nolothane stuff.
I couldn't tell the difference straight away,but the more I
drive it the better it felt.I still need a wheel alignment,but it feels
much tighter (the way we like it) Just a warning check the steering
rack bolts,mine were getting a bit loose from the extra stress.
STIFFY