i had to post my findings with this configuration.
just a regular sized ceramic in my JB in the bridge.
what i like most is the low end doesnt accept alot of extra processing, it stays tight under pressure. the JB8 can go from medium rock to extreme death metal the more you add gain and eq changes to add volume. with the JB+ it kinda lets you know right away if your adding too much gain just like the regular custom sh-5, if too much gain was added it would get revealed in the high end fizz. i dont hear the fizz i did with custom, but i dont hear as much low end compared to the custom.
the difference i hear between the JB+ and the JB8 is what they do best.
JB8 likes to bloat out massive sized palm mute articulation, which i love for doing deadly heavy tracks.
this JB+ likes open power chords more and has that slight high end resonance that works perfect for strumming out 2-3 note power chords.
it also has relaxed upper mids, they do not grate like the alnico 8s sometimes do when using alot of trebley marshally type gain.
it doesnt do the palm mutes quite as big but thats ok, im ready for change.
the guitar was slighty out of tune by a few cents here or there, and im tuning to C standard so there loose for getting layers matched up.