Need info on converting a long bed to a short bed

[misixtythree]

I am new here and I just bought a '63 chevy stepside long bed...it needs work...first thing is I hate the long bed, it goes on for days. I have seen articles on cutting down the frame and converting a truck to a short bed. Does anyone know where on the 63 frame exactly the cuts should be made and how much (inches) of the frame to cut out? And does it make a difference because it's a stepside (wheel alignment)?