I am considering running a set of Skunk2 stg.II's on my H23 VTEC. Assuming I use these cams, upgrade to some Rocket Motorsport dual springs, and keep the stock redline (7600), would stock retainers be alright in the long run?

From what I've read, it seems like the retainers are more subjective to RPM's than the lift of the cam.

 

 

Stock retainers should be fine. I am not a big fan of titanium, my friend had a set of JUN IIIs and used JUN titanium retainers and in about 12K the were done with

 

you should upgrage both spirngs and retainers when doing bigger cams especially a stage 2.