nfox--if it's out of a manual you will need to do nothing 'cept install it--your shafts will work fine--the front will be lengthened and the rear compressed--they will do this with not mods--only other thing might be the carrierbearing mount may need a little attn as it might not line up, but I don't think you'll have that prob--I did when going from a light duty in my auto to a heavy duty out of a manual---chris