street/track suspension help

[project.65]

current suspension is shot, so now its time to change everything. I want to set it up for street/track. So far im looking at:
global west uca's & lca's, global west strut rods, koni shocks front & back, roller spring perches, 5 reverse eye leaf springs, want to change rubber bushings to poly but ive read that the love to squeak?
Now i need help with what type of front springs would go good with this combo? Ive been rec 620s but i want something a little lower without any cutting of the springs. any ideas? I also need some rec on subframe connectors, something that will snug up real nice?
if you think i should look into anything else for a good responsive car, feel free to let me know.

 

[chromedog]

grab a trac makes 620's that are already cut, thats what i have, and im really happy with them. you are right about the poly bushings making a bit of noise, though i wouldnt call it a big deal, you kind of get used to it. my leaf springs are eaton's ...they are called gt comp, slightly stiffer than the factory gt springs, and aprox. 1" lower. check my stance at my cardomain page.