The more I read the more confused I get. I have a 67 CJ5 with a Dana 27 front differential. I picked up a NT Dana 30 for $75. On the ends the 30 only has spindles. I know I need to regear and get a new differential because of the gear break. My CJ has 11" drums and I'm good with running them. Can I swap them from the 27 to the 30? Are there any more suprises that I may be in for?