You might need new drivelines also. The T5 is a 5sp I believe, and a small "box" the T-18 is HUGH in comparrison and weight! When I swapped out my T176 pos, my T18 was/is 2" longer and 90lbs heaver empty! I needed a longer front driveline and shorter rear drive line. Keep in mind, that there is an adapter plate on your jeep now, albiet a tiny one. The new one will add a little length, that, coupled with the new T18's added length is why new drivelines may be needed.
