That's no big deal I got spare blades but I might upgrade to .030 blades if this works goodBuy one of these first before you install it and if you keep it deduct it from the price and if not charge him for the parts.
Holley 26-94 Carburetor Throttle Plate Kit
Throttle Plate Kit 1-11/16" Plate Dia. No Holewww.holley.com