If you want to do it on the cheap, try the indexed levers and see how they work. You can always switch them over to friction if it's a total FAIL. +1 on getting SIS or other indexed compatible cable housing; even though it's just that little loop at the back, it can make a difference. Just buy a foot of the stuff from your LBS; that should be enough for the little loop at the back if you're using DT shifters. If decide you need new freewheel and derailleur, get something compatible with the rest of your system (i.e., Shimano, Suntour, etc.)
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I stop for people / whose right of way I honor / but not for no one.
Originally Posted by
bragi 
"However, it's never a good idea to overgeneralize."