Includes items to calibrate shift timing and shift feel. Extensive improvement to overall drivability and durability. Addresses: 1-2 bump or slide, 2-3 bump or slide-bump, rough down-shift, 4-3 cut-loose or bind-up, 4-3-4 shuttle hot, 4th shudder light throttle, OD band failure, excessive shifting, late or no 4th, falls out of 4th.