If you ride American Bottom Bracket, have you considered an American to Mid 24mm

[ReapThaWhirlwind]

American to Mid Bottom Bracket Conversion cups in 24mm can allow you to run Shimano cranks in your American Bottom Bracket without the thread together conversion to Standard Threaded bottom bracket. Anyone tried this? It would require some spacers to perfect the chainline, but is a neat prospect.

I'm going to try it out to convert a BMX bike I have. I'll actually need an American to Mid cup and then a PF41 cup/bearings inside that one, which should enable me to run a BB30 FSA Afterburner crank with a 30mm spindle in the BMX.

Note they also have American to Mid 19mm to run FSA MegaExo cranks.