Rear tire size needed for 340 stroker?

Richard McLaughlin said

Mopar Performance Offset Shackle Kit

Is this the correct kit? There is one there with a spring to.

What exactly do these kits do?

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Mancini Racing Offset Shackle / Spring Hanger
Item #: MRE75077
This is the kit you need. It moves the springs inboard so that the tires dont rub on the springs.