If I started a new project tomorrow, DSE subframe would be #1 on the list. It's just that good. The front steer rack gives you a ton of room for big headers and a factory z bar. The C6 spindles allow stock brakes. The splined sway bar is an easy change and not that expensive. My car with the DSE sub and G Bar rides as good as my 08 550i 95% of the time. It handles waaaaaaaaay better. Last time I autocrossed I left the front rebound and compressioin setting in street trim. Best the car ever felt. I do stiffen up the aise end.
One a budget I'd call up the boys at speedtech and buy a set of their spindles, control arms, tie rod sleeves, body bushings, and call it a day.
