42/43" offset/bs?

[ZoneArc]

Im curious what offset or backspace is best for JTs on 42s or 44s? At this size most everyone is running Trepadors or Bajas which would be what I would get. 17s or 20s are up in the air, and Im running UD60s right now (stock WMS).
Im guessing we need to do some serious offset to not rub on the control arms and lose turning radius. Guidance appreciated!

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