I'm 'bout to do the Koni Yellows and the GC 'sleeves ' setup. Once I grab the necessary $$, I'm gunna get 'em, problem being: what's all this mumbo-jumbo about GC Limited Edition vs. GC Retail; the GC Retail vs. the Koni specific GC; and whats this about custom spring rates from GC and can you get them Koni yellow specific?

Secondly about the install: do you think a 17yr old and his dad could install these babies during some quality father-son bonding time (of course, the father will provide most of the technical know-how)?