Question about pulleys

The guys ae correct . the w.p. pulley in top pic is a small block A./C pulley . the crank pulley in the bottom pic is for b.b. with A/C/ . No go ! you need a matched set . the crank pulley diameter must be the same as the water pump pulley . The triangle and alternator brace must be the correct one also . If you attempt to cobble it up only leads to frustration . good luck