I'm pretty sure the RockKrawler mid arms are 1 inch longer. Check with Jeremy, he should be on the sponser forum.

 

I need to readjust my adjustable arms to move the axle back when I get new driveshafts. Right now I have them set to a little shorter than stock length to keep the driveshafts good until I can afford new. I also have the Rock Krawler spring correction pucks that will help when I move it back because I believe it rotates the spring mounts when the axle is moved back.

 

If I move the axle back will it decrease the spring bow created from rotating the pinion up? I have the wedge pucks but there is still some bowing. I am thinking about moving them back about 1/2" from the lifted current position so I don't have to cut the Rubicon rock rails. But if it helps the spring bow that is another good reason.