To start off with I was considering a full-on k frame, tubular a-arms and coil over kit for my GT. I originally was going with D&D but it was on back order, so I decided to go with the Griggs tubular a-arms, coil over kit and k frame. I was stuck on what coil over spring rates to get so I called Eric at Griggs. I asked him about the spring rate for the front coil overs and he asked me what was done to the suspension. I told him I have STEEDA's level three suspension minus their lower rear control arms. He said that if I want to make a drastic performance upgrade to my suspension I should remove the upper rear control arms and install a torque arm and panhard bar. He said this is the first thing they do to a Mustangs suspension. The reason being is that the front and rear roll centers aren't in line with eachother. The rears center is way too high and it causes what he called "snap over steer". This is described best by visualizing driving your Stang into a sweeping turn. The outside front corner of the car dips down while the diagonal rear inside corner lifts up. now when you drive over bumps it binds the rear suspension (worse for lowered cars!) and wham! It causes the rear to unload and over steer before you have a chance to counter steer. What was ironic about Eric discussing this to me was that I am experiencing this same problem with my car and I thought it was due to the front suspension! He said that most people blame the front for this. MOST OF THE SUSPENSION problems with Stangs is in the rear. Now the what I liked was that Eric didn't try to sell me anything, he explained what was wrong with my car and told me what would fix it. He also said that I I was to buy a panhard bar and torque arm somewhere else I should make sure the panhard bar can be used without the uppers cuz if it can't then it can break and cause the car to whipe out.
Anyway, sorry for the long story, Just thought I'd share this with you fellas.
Thanks for everyone's help.
Definitely going with Griggs from now on.

[JUSTNLX]

That is basically what Chuck from Maximum Motorsports says too. They gave me (well didn't give me. $$$) everything for the rear and front. The rear suspension is fully adjustable, the rear coil-overs, the torque arm, panhard bar, and swaybar all adjustable. I asked Chuck about a front adjustable sway bar. He told me the same thing you just said. That the rear is the one that needs all the help and that the stock front bar is plenty. All I needed on the front was good springs, struts, and bushings. I went with Maximums front coil-over kit and some Bilsteins. I'm on their list for the K-member and lower control arms when they are done. Chuck was the same way, he didn't want to sell me anything I didn't need. It's nice when you find a place that wants to help first then sell later. Plus they are there one you need them!

Yeah, it is nice to find people who wanna help. I'm going with the Griggs stuff soon. I'll post about what I think, if anyone cares

[Philc]

if running griggs suspention- 1 warning.... wear glasses!!!!! or your eyeballs are gonna pop right outa your head!!

Phil,
So your saying that Griggs made your Stang handle eh? Sounds good! Give me some info, your experiences, before and after. What coil rates are you running? Are you running a panhard bar/torque arm out back? I'm expecting my k frame Wednesday and I can't wait!

Thanks!!