Thanks for all the advice, this is what I'm looking for. I would like a car that rides smooth but firm and sits lower than the 4X4 looking 9C1 springs.
Bilsteins made a huge difference in handling in friends GN, but it rode terrible on 40 series 17's and the 60's went way up. Of course the G-body is a loose mess with no torsional strength (look at any making power and there are cracks at the b-pillar/window meeting). I settled on KYB's for my GN after lowering it with Eibach springs and 2" drop spindles. It doesn't look as bad as it sounds btw.
The rears on the Caprice look factory with no obvious signs of being cut and the Intrax rears were still new and purple in the box in the trunk when I bought the car. I was happy with how it rode out back, even with four people and a trunk full of luggage.
So I guess I'll look for a set of used SS front springs (so they have the sag built in
)and put some Bilsteins on it. Then take the spacers out of the rears, and hope everything sits where expected.
As for the wandering I have found a shop two hours away that comes recommened by a couple of GN guys that have used it and they deal with MOOG parts, hopefully they will know of idler arm part. The SCCA club is a GREAT tip thanks I've never thought of that. I am going to register with the west MI branch this spring and throw this monster around a parking lot soon, it should be fun to see what I can hustle around quicker...the Caprice or GN.
Thanks again guys.....I almost sold this car recently and decided I can't...the renewed interest makes me drool for spring.