Ok guys i have just bought a shinano saint cranks(double 32/22 with bashguard) firstly will this fit a 68mm bb shell and secondly dont know what chainguide to use or what type(ISCG or ISCG05)
If you don't have the ISCG mounts and are going to buy a DRS you need the Old ISCG backplate. For any other chainguide you're ok with any because they're supplied with adaptors. If I was you I'd keep the dual ring and get a DRS, unless you do DH, then it's either the SRS or LG1, SRS has a bash, LG1 hasn't.