Hello Rickshaw! I have installed 1 RH rear (Pass. side) seat in my D1 to hold my 4th child in. PITA, but do-able. I had my child install bolts in brackets because his hands were smaller. You need to make sure that you get ALL bolts, brackets, and the plastic surround with your seats because THEY ARE DIFFERENT than what you have now. Also the rear air surround will not be the one you want as it is completely different than a non rear air surround for jump seat. Though the seat is the same, I think a couple of the lower brackets may be different. Not sure. Can check if you need. Rear A/C surround places LR seat about 5 inches farther into storage area than non A/C mounting. You will save $$$ buying salvage & can get the proper surround & hardware as needed for install. I bought my "6th" seat new from Rover & paid a small fortune for it. If you need install instructions, I have factory rear seat install book, No words, just drawings, kinda confusing until you stare at it w/beer for about 2 hours, then it clicks and install goes fairly well. Good father-son project!