A/C pulley siezed
 

HI this is my first post here and I need a little help to get my 68 Polara back on the road, today the a/c pulley siezed up and both belts snapped. I managed to free the pulley with some squirts of WD40 but it only goes so far before hitting something and wont turn any further. The AC system wasnt working anyway so I'm considering removing the compressor and relative parts and fitting a bypass pulley. Any advice or tips on this would be great, also any ideas where I can get the correct fitting bypass pulley?? cheers!