link to OLR forum, to follow..
http://www.onlineracin.com/forum/tm.asp?m=40869

Mr Nobody, did a dang fine post... here is a copy of the text, but you
should check out the link too...

Well, I got really curious after I started to get mad about the "ALL NEW
GAME ENGINE" claim that EA specifically emulsed on the contents packaging.
So I decided to find out if in fact it really was an "all new game engine."
I downloaded a reader to take a peek at the EA pm suspension file. I took
the mercy of not including the entire thing, but I think after ya'll notice
exactly what it says... well, you'll get the picture. EA wasn't even smart
enough to change the dates and actually this is on the verge of consumer
fraud.

Enjoy the buggy Thunder 03 "game" guys. I'll enjoy using both CDs for new
coasters. At least it's "all new" in that regard.
zx11

Nascar Thunder 2004 Suspension File - Developed By Doug Arnao 05-21-03
// Revised 5/21-03 A-Arm placement to reflect a more relaistic in-garage
static camber setting
// Revised 5/22/03 Shortened Torque Tube length to 60 inches (was 100")
// Revised 6/06/03 Incresed length of steering arm
// Roll center height = 3.14" with lower arm parallel to the ground
// There is -0.96 degree camber GAIN per 1" of bump travel
// Roll center moves linearly (more or less) with bump travel - IE if the
chassis moves down 1 inch the RC moves down 1 inch
// With roll, the RC height doesn't move up or down any appreciable amount
(1/8" max over 2 deg roll)
// With roll, the RC moves to the left (while turning left) .43" (11mm) per
degree of roll
// For every degree of roll we LOSE +.64 deg of camber on the loaded side
and GAIN -.69 on the unloaded side