I took Scrod's advice and picked up a pair of sram s300's, although I didn't buy them new, so they didn't come with the necessary GXP BB.

However, a friend of mine sold me an FSA MegaExo BB (on the cheap, of course) and when I brought it to my LBS the mechanic said the sram s300's would fit just fine with the FSA MegaExo BB. I was a bit skeptical but the mechanic said he was very experienced, so I took his word for it.

In short, can my GXP-intended crankset be used on a FSA MegaExo BB?