Ok,I picked up a Miyata 914 and it has pedals intended for a special shoe. My question is what shoes? what cleats? are there any economical options?, I am just barely getting by ,So I can't just happily order something. what to look for on ebay etc.? Is there any way to convert normal cycling shoe?( I have a pair) the groupo is all Shimano 600 and the pedals say Shimano, they have a grey finish