What springs are most people running with the cc306? I am buying some heads that already have 918's but it seems like with a 1.6 rr that would be pushing it with lift? The springs are good to .600 lift right? Well with the 1.6rr it would be pushing around .580, is that going to be too close or what? Thanks in advance!

 

612's (single) and 987's (dual)

 

It depends on what the installed height is.... they bind just below 1.100." So if it's installed at 1.740" or more, it should be alright.