I think you should have three, in case 2 are down for repairs. My 2 (87 300D - engine out/ disassembled due to blown head gasket/cracked head, 92 500E- misterious CAN/computer issue that seems to have recently healed itself) are down and I am considering a third W124 as a short term acquisition until I can get the 300D back together for my soon to be licensed daughter. I really like the W124s. My DD since everything is down is a 86 porsche 944 turbo that has about 200k.