New to A bodys, could anyone help me with the million questions I have

Welcome to FABO! I looked for front fenders for awhile for my 66 Valiant, finally found one on ebay and another in a boneyard. Rear quarters are tough to find, new floor pans are available but I can't remember the nameof place I got mine. (I will remember or someone else will) I would get some disc brakes from a 73-76 abody, they will work and have the large bolt pattern. I got new a-body axles on ebay for my 8 3/4 rear that already have the 5 on 4.5 patttern, they are Yukon axles. You could also get a 8 1/4 rear from a Volare or Duster, they also have the bigger pattern and are easier to find than an 8 3/4.