Sniperduce if you are still monitoring this thread, I thought I would pass this info on to you. I was concerned about the measurements myself as well as placement of the front wheel chock. I talked with 4 Seasons RV, Abilene, KS (where I ordered my 347HTH). The sales manager (Kerry) owns one personally so he went to his unit, measured everything in the bike storage area, put it on a "to scale" illustration and faxed it to me. The short of the story is, I drew the measurements out on my garage floor and my HD Heritage Softail will fit fine--94" overall length. The measurements are (inside) 115 1/2" right wall length, 45 1/2" front wall (with kitchen window), 30" from the front wall to left and right d-rings. There are 4 D-rings and they are 60" apart front to back. The rear D-rings are 25" from the rear (ramp) door. The D-rings are 4" from the right wall and 30" apart left to right.
Looks like our unit will be in 2-3 weeks----getting anxious.
Good luck:C