[molehole]

If the leak is coming through the compressor clutch it can be rebuilt with special tools but it is not really worth it. If it is where the lines hook in that is pretty simple- just have the system evacuated(if it hasn't leaked out already), loosen he bolt and get new o-rings. As for where to buy one I would try online. I bought one on Ebay that was used but has a 1 year warranty on it for like $89 with free shipping. Ones at auto parts stores run around 300-400 while AC Delco are like 700-800. Good Luck