If your motor is in the stock position your rear will need shortened and the front lengthened. I am doing the same swap on my cj6. The difference isnt tremendous but its more than you would want by trying to compress/extend your stock driveshafts.
Thanks for the reply! Well maby I can find the ones that came with the tranny at the junkyard where I picked it up probably cheaper than what an axle shop would charge to shorten/ lengthen mine once again thanks!