I want my car just a hair lower all around. I like it as is but really think about and inch both front and back (maybe 1.25" in back) would be perfect. My wife says not to as we tend to bottom out from time to time but what does she know
The H&R sport springs sit a tad lower than the eibachs you have now. There are no guarantees unles you go with coilovers or at least coilovers in the front and adjustable LCA's in the rear. Then you will get it exactly the way you want.
I did the driveshaft at the same time as the intake thus can't tell you directly the difference of the AL driveshaft. I suppose I would have to say that it's smoother in the overall drivetrain.
Lower control arms. You still keep your stock springs and shocks in the rear but have adjustment in height from the lower control arm. It's a little cheaper to go that route. Also, some guys don't like using coilovers in the rear for strength reasons(track). but most don't need to worry about that
Carefull which adjustable LCA's you use... I have the MM's and I do not
have a panhard bar. The MM's are designed to be used with a panhard. Without it,
the rear will move side to side during hard cornering. With 295's on the
back, I've actually had the tire hit the fender lip a few times.
I've heard that is not a problem with the Global West arms due to the different
placement of the spherical bushings but no experience to prove it either way.
The front of my car sits almost exactly the same as it did with the Saleen springs
but it doesn't bottom out any more. I have 1100 pound super race springs in the front.
Surprisingly, it rides pretty good...