I tested both the SH and base when I bought mine in Dec. of 1999. Could not justify the 3000.00 price difference in performance for a spoiler, leather shift knob, and ground skirts. Bought the base, got it with fogs, spoiler, and a leather shift knob. Love it. Just hit 68,000 miles and not a single problem with it. What exactly would you like to know? Because other than the ATTS system and a more agressive alignment, they are the same car.