My step father has a 455 stage one built up with Kennie Bell parts he ran in a stage one skylark. any help or suggestions with his problem? -"Question, I have a Buick 455 in storage. Has any one seen a oil pump with double stacked pump gears and a spacer in the center, I don't have the pump apart now so I can't post photos, what company made these, custom build or ? I raced this engine for years till some one totaled my car."