One MAJOR improvement was the upgraded ADCO sway bars. Not too bad to install if you have F/R factory bars (a P71 should have em). Made the car come alive in the corners!!!!!!!!!!!!!!!!!!
Anyway, another great site is
http://www.crownvic.us if that link gives ya trouble, try
http://www.crownvic.us/forum/index.php
Lots of great help there!!!
Sean