Good god, what are we talking, a couple ounces ?!?!? Hell, skip the fries at lunch !!!
As for the ackerman, zero is fine for straight line racing but the OP's application (as far as I know) and mine would be a street car and you do want some ackerman or you end up with significant scrub.
As far as the ackerman discussion, from everything I read, if you get the outer tie rod intersect outside the balljoint, you will have ackerman. Maybe not the exact optimimum position, because of space limitations ie: the wheel, but you do the best you can. On a side note, My rack is out 8 1/2" in front of the wheel. The outer tie rod connection is 7" in front. My mind escapes me how far out the tie rod connect point is outside of the ball joint. I'll have to look at my notes. Also, using my test arms, I played around with the outer connect location, in and out, up and down and settled on a position that got bumpsteer to within .030" over 6" travel.
Tshell, Tried to PM you back, but you have that feature set to not accept PM's.
