Woods .590 is a good torque cam. While the S&S.600 is a good mid to top end cam. Need to make sure you have springs capable of handling the lift of the cam of your choice and roller tip rocker arms as well.:2thumbs:
Whatever you can go without changing the heads. Not sure for your bike, but when i changed the cam on my HD boy did it make a difference. Plus jet kit, high flow air cleaner & the right pipes. May need to change pushrods.
Nope... you need to talk to Alhall, Cutter, or Marv.
But you need to find out what you have first... the ONLY way to do that is to check the cam itself. May have to pull it to have a TRUE idea if not printed ont he end of the cam.