indexing 5 speed shifters will probably be tough to find. If I were you I'd go with bar end shifters or just some cheap thumb shifters (both friction, though) unless you want to change to 7+speeds in the rear.
I have a right 5 speed thumb shifter i can send you.

or you can get both for $5 here
http://www.niagaracycle.com/product_...ducts_id=11971