You need the triangle bracket for the upper alternator bracket along with what appears to be a slightly curved "strap" for the lower alternator bracket. The lower bracket you showed is not correct for a NON A/C setup.

Mine uses a 2 groove crank pulley, a single groove W/P and single for the P/S pump. The alternator is 2 groove only because it was the parts store had in stock.
I am actually switching to A/C and dealing with all of the multiple pulley combinations the factory used!