How about getting a nice Shimano Ultegra crankset of the Bay, a few nice 6400 series cranks and a new bottom bracket would be right around $125
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72 Geoffery Butler, 72 Gugificatizion Witcomb, 72 Raleigh Gran Sport SS, 74 Raleigh GrandPrix dingle speed, 74 Raleigh international, 81 Centurion Pro-Tour, 85 Gazelle Primeur, 29rBMX, Surley Steamroller 650b