I've had a long string of Echo bikes over the years and they've all had Spanish bottom brackets. My current Ozonys and Arcade have Euro BBs that allow me to use much more modern and WAY better crank options. I've just gotten another Echo and I really don't want to run a crap ISIS BB and cranks again. Has anyone modded a Spanish BB to run modern cranks? I'm gonna try it, but the pieces to make it (hopefully) work are coming from all over and I don't have them yet. My plan is to get 37X24 bearings to press into the frame and use modified Shimano SLX cranks. The problem is the spacers. With a 68mm BB shell I'll need to make up 27mm worth of spacers to align the cranks. So far I haven't found any sweet cone spacers that would do the trick. Wheels Mfg makes 24mm spacers in 1mm, but they're $1 each and honestly 27 spacers is a little too ghetto even for me. Anybody got some sweet 24mm cone spacers or collars? 17mm driveside and 13mm non drive - or so I'm told. I'll keep you posted with my progress.