I'm building up a 74' Raleigh International Frame into my first fixie. I have an unused Ultegra cartridge bearing BB that I would now like to put onto this bike. However, it has an octalink splined interface. The only fixie specific crankset that I know of is the Dura-Ace Track which costs more money than I'm willing to spend. Are there any other options or should I find a different BB and use the Ultegra somewhere else? Thanks.