Stopped by Axleboy in O'Fallon MO, they had a scrap bin with stock coils, picked up some 17AC fronts and 59AA rears. Not the set I was dreaming of, but definitely heavier than what I have (14ac &56aa). My boy (JT) was loves playing with Jeep parts.
Cut the body off long and set it on the frame for some approximation. The masking tape is where the body should end.
Kind of figuring.... Leave 2" between bed and cab, add 14" on back of frame. End up 45" from center of axle to rear of bed (same as a long bed MJ with no bumper and shorter than my 3/4 ton ram)
box behind the axle might be 24" long x 12" tall x 12" deep.
box in front of the axle could extend into the original Jeep fenderwell
As it sits right now, the bed floor will be 6.5" above rear tires and level with the bottom of the hood.