Buick Century Serpentine Belt Bypass

My Car Makes This Loud, Constant Noise That Sounds Like An Airplane Idling. At First I Thought It Was My Water Pump So I Got It Changed...

I Have A Bad Ac Compressor Pulley And Ac Hasn`t Worked For A While. There Is A Diagram Showing Alternate Belt Configuration For With Or...

The A/c Went Out And I Want To Bypass It With A Shorter Serpitine Belt What Size Belt Would I Need?