I saw some Dura Ace track cranks on Craigs list that are 175mm long. I am used to 170mm and haven't had a toe overlap problem yet. I have a conversion with about 9 1/2 inches of BB clearance.
It sounds like a good deal_$160 for crank, bb and a Vuelta chain ring. Brand new the crank is like $300.
Any input would be welcome.