I don't know if this was mentioned before, why not use the same specs as the OME shocks as far as the compressed and extended length shocks. This would likely cover from 0" up to the 4" lifts.
Can DS configure them now to the OME L specs as far a mounting configurations and extended and compressed lengths. I would like to get buy a set now. Before a planned deth valley trip next month.
From DS, hope this helps
front/rear are pretty close in dimension I will list the closest dimensions Fox would offer below:
Front & Rear - stem/stem mounting or stem/loop mounting:
24.4" ext and 14.8" coll
25.1" ext and 15.1" coll