I used a standard bell with an adapter plate and gusseted z-bar for strength. IIRC, I had to slightly modify the bell (took about an hour and was easy). Been over 150,000 miles and it is fine; never had a problem and I have driven somewhat spirited at times. You will have to shorten your driveshaft. Using the old style or new style bell will still place the shifter in the same spot, therefore the tailhousing will be about 1" aft of the stock. I had mine shortend 1" and had a spread spaced front u-joint in the front so the old style shaft could be used. As another poster mentioned, the job will cost about $100.00 including balancing and new U-joints. Also beware of possible exhaust interference; I had to have a new cross over installed because the T5 is taller or deeper (whatever) than the T10 I had in there. On the other hand, I have a custom made system. You will love the overdrive. I also loved the 3.35 1st gear. Mated with the 3.40 Traction Lock, it launches well and yet gets decent gas mileage. Semper Fi!