Well, having had DT shifters, I would say, WHAT ARE YOU THINKING?!?!?!?!? I would get some bar end shifters and put them on the end of your aerobars (now that you have a good excuse) or put them on the drops (assuming it is a road bike, and seeing as you have sti shifters it probably is). DT shifts are annoying, and if you have any sudden shifts, you will be all over the place. so bar ends on aerobars or drops is my recommendation. or just try to ebay some old sti shifters.