I am looking for a vintage Raleigh 10 speed bike, circa 1970's / 1980's. My previous bike was a 1973 Raleigh Record. I now have a Grand Prix bike that is too big for me. I am 5'5". What size Raleigh would be right for me ? I cannot remember the size of the Raleigh Record that I did have. But the Grand Prix is a 502 with 26-27 inch tires.