im using, and would reccomend, spec clutches. ive used their stuff on corvettes, mustangs, mopars, hondas, and an amc. i love their clutches. they hold great, survive and thrive under a tremendous amount of abuse, and are reasonably priced. weve got one in a 68 camaro that runs 10's on the bottle and slicks, and the cluthc has held up for the last 5 seasons.
hope that helps.
the 2+ is what i have in my duster, and its ben a wonderful clutch. when i do my T5, ill be getting the appropriate 2+ disc for the setup.
Michael