@Slunglow if you run the calculators it shows that 11 is the minimum you want on a 345.
By the way I found out from another SS rider that the aftermarket shocks will not work with a 345 unless you use a spacer or adjust the offset in the rim when made.
Just keep that in mind!!
Wait, what? I have Alpha JRI 2-Ways... A 345 rear won't work just like that? Need more stuff?
Man... What's the next step down but above 305?