Regardless of wether or not it's a Stan Pike DO NOT have it converted to track ends, it will ruin the frame from a collector's stand point and theres a risk that the person doing the conversion could make a mistake and destroy what is obivously a very nice vintage frameset. Long horizontal dropout work just fine for fixed gear use so their is no reason to convert beside a personal preference, if you want to convert a frames drop outs please find a mass produced and common road bike.