26 is the way to go. Dual is for more holding power I guess, I know they are more expensive as well. I would go with a Spec Stage 3 or 3+. Pedal is slightly lighter or stock like with great holding power. They chatter like a boitch the first 1,000 or so miles...like can't stand it old pickem-up truck like
Spec 3+ here, I love it. Clutch pedal is heavy as hell which is fine with me. Heavy just like when it was stock. +1 on the chatter like a bitch for the first 500 or so miles. When I want a light as hell clutch I just jump in the Ranger!