I'm looking to purchase a 1980-1985 W123. Alot of these cars I see for sale have A/C systems that are either inoperative or just not cooling. My question for this post is: If I were to buy one of these older MBs, is it difficult to find parts for the A/C systems? I live in Houston and A/C is a must down here. Any insight on this (A/C systems), or anything else I should be concerned about purchasing one of these cars (what to look for, watch out for, etc) would be greatly appreciated! Thanks!