I dont think you can mount the front springs under the frame. they have to be mounted outside of the frame. You have to weld a spring perch on the outer side of your frame, The axles are wider and the front dif prevents you from mounting them under the jeep. If you look at your front 30 passenger side spring ubolt, you will see that the one ubolt is right up against the dif, on the wider axles the dif i right where the spring needs to go, so people mount the front axle outboard of the frame. I think the rear is mounted as normal. Most waganeers came with 44,s front and rear but some did have the amc 20. Starting in, I think 82 the cj,s got wide track axles (yours should have narrow track) They are 3" wider than the ones you have now, Same axles but wider, the gearing on the wider axles will prob be dif, yours should be 3.54 and those will prob be around 2 something. Thats not a problem, you will just lose a little gearing