you can use any brake levers you want, so use the dura-ace. the bike should already have the necessary cable housing stops in place to accommodate centerpulls. The difference between uniglide and hyperglide is that uniglide does not shift as smoothly under tension. You know how on old friction systems it's better to let up on the pedals while shifting? Well Uniglide will shift smoother if you do that than if you are pounding away. I usually let up anyway as I don't like putting that strain there. The only time I am thankful for new shifting systems is on grueling hill climbs. Like the ones I did the last 2 fridays here in vancouver up out north shore mountains. These are situations were you are crawling up and letting off the pedals is going to slow you down too much and loose momentum (well if I even have any).