Hello! I am trying to figure out what I will need to do to upgrade the componentry on my 1994 Cannondale R400. I am going from old broken rsx 2x7 stuff to 105 2x10. I believe I understand everything except the cranks and bottom bracket. My understanding is that they have changed the way bottom brackets are made and I cant get a modern crank that will fit on the old bracket. I am hoping there are some tricks or tips that you mech inclined folks can point me to that will make this process easier.

Thanks!