A good transmission jack and a flat surface to work on helps bunches. Other than that the only tip I can give is go buy about 4 peices of metric allthread about 12 to 15 inches long. Screw these in to a couple of bolt holes on each side of the tranny. That way it stays lined up right. If your truck still has the dual mass flywheel it would be an excellent time to ditch it. Cause if it hasn't failed it will.