Saber, I believe the '03 was prefered over the other years because of quickness and top end, and if I'm not mistaken, '04 was when Cat went to the DD in the "F" which robbed top end. Anybody feel free to correct me, I don't offend easily.
I'm still not sold on the DD for performace. I'm not selling my '98 t just yet, because the Turbo Z1 doesn't come close.
I'm still not sold on the DD for performace. I'm not selling my '98 t just yet, because the Turbo Z1 doesn't come close.