Olds75

Hello everyone, I'm new to the forum and I've just started working on my 66 olds cutlass that I've had for over 30 yrs. Just had the engine rebuilt but I need the adjustable alt bracket before I can go forward, the vehicle has a/c and the alt is located on the driver's side. I switched from 330 to 350 (casting #557752-3B), can anyone help?