I will document my build and will continue posting here as well. I did a pretty good amount of research before I bought the Level 1 kit. One thing I had a hard time finding was good customer reviews. I always like to back up companies claims with user feedback (especially with a pricey purchase).
If you piece together a kit with adjustable strut rods, front and rear shocks, torsion bars and leaf springs, front and rear sway bars, and poly bushings for the lower and upper control arm, you will come close to the price of an XV level 1 kit. Since I needed everything I thought the XV kit looked like a good deal and so far I am very happy with the quality of the parts. I got the XV DVD and really liked the engineering/testing they put into their products. Perhaps I'm biased because I'm an engineer and work in the auto racing industry. I won't be able to make a great comparison on the before/after handling of my car as I only had my car in stock trim (with warn out parts) for three months and I didn't even have sway bars.
Two things I wish I would have researched more are tubular vs solid sway bars and how the rear sway bar mounts.
The only complaints I have heard from XV Level 1 owners are that the car sits too low and that it is too stiff. This made me happy as I want the car as low as possible and want it to be stiff.
Seems like Firm Feel has raised the price of some of their items since I last checked a little over a month ago....
QA1 Front Single Adjustable Shocks, Magnum Force () $335.90
QA1 Rear Single Adjustable Shocks, Magnum Force () $355.90
Sport Leaf Springs 160 lb/in 3 leaf lowers vehicle ~1”, Hotchkis (24367) $550.95 (comes with redesigned hangers)
Road Race Leaf Springs Firm Feel $260 Leaf Spring Hangers Firm Feel $65
Torsion Bar 1.12” 270 Rate Race, Firm Feel () $350
Adjustable Strut Rod, Hotchkis (14366) $302.95
Adjustabl Strut Rod, Firm Feel $195 + Eurathane Strut Bushing $45
Sway Bar Front 1-1/4” Firm Feel, () $275.00
Sway Bar Rear ¾” Firm Feel, () $345.00
Poly Bushing Lower Control Arm Hotchkis, (21366) $29.95
Couldn't find Poly Bushing for Upper Control Arm, but Raybestos and Moog offset bushings were $21.99 to $26.79
-Dave