Heater Fan Motor Mod for Added Engine Bay Clearance

It probably is, I had a metal one and a plastic one. The metal piece is 24 blades while the plastic one is 32. Since I lost a little of the efficiency of the fan by moving a section of the fan blade out of it`s duct I thought the 32 blade wheel might help bring it back. The plastic wheel came out of a `70 box, I don`t know if it was stock or not.