Wanna upgrade to a TR224 .563/.563 112 LSA. Can i reuse the stock retainers (2002 camaro SS) with Comp 918 springs?

Also, what are the advantages in upgrading to titanium retainers? Do i have to upgrade or can i stay with the stock ones?

 

Stock retainers & 918's should be fine with that cam, but Ti isn't a bad idea. The advantage of titanium retainers is that they are lighter than stockers.