I used the same exact springs. Did you get all 16 or just a partial box? Be good to keep the extras, I broke 3 in 5 years...lol
Just experience here about springs: Once you build it each day you start it is has to be a 5 min warm up before driving it. I know I broke mine driving hard one night before it warmed up... showing off can be costly dude...
oh, and welcome to the world of 6400rpm shifts, its a fun place to hang out