Project farm truck!

Getting a 69 dodge D200 2 wheel drive. I has a bad 318 in it but comes with a later model 360 and a 727. I am gonna turbo it as cheaply as possible. Will a cheapo GT 45 off ebay be big enough for the rock stock 360? How much boost for the same set up? I have a mallory pump and mallory boost ref regulator. I know they arent great but will it work for my low HP build? I dont plan on running a fancy ignition controller or anything. I'll just retard it enough for the little boost I'll run. I also have a 650 blowthrough to use. Any thoughts?