the spring rates for the suspension is only 25% stiffer front and ard 15% stiffer rear. will that make a huge difference in handling or are there other factors (of the suspension) ?

seems like the installs for coilovers with edfc go for a pretty penny like $500+

 

thats way too much for install... i wouldnt pay over $250 for install on on coils... i'd pay even less if it wasnt for having to run the cables for the EDFC (prolly the hardest part of the entire job)

 

are spring rates and damping rates the same?
sorry but i don't know a whole lot about suspensions

 

got quoted $625 for installation at ZCG $725 with alignment... isn't that too expensive?