what is the part number on the serp belt that most of you are using with a underdrive pully. mine broke last night and there is not enough of it left to bring and match up for a new one. also two of the a/c compressor bolts broke but I lucked out the compressor is not locked up.

 

Used to have a 59" belt but I also have overdrive alt pulley, so 593 might be what you need.