When you find it critical to spend a weekend organizing your MB parts by category so you don't spend two hours looking for a spare light bulb.

When your emergency parts kit weighs more than the passengers in the vehicle, combined.

When you tell your friends if an EMP ever occurred, your car will still run and drive.

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1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors.
2003 S430 - 107K
1983 300SD - Tanoshii - mostly restored ~400K+.
1983 300SD - Good interior. Engine finally tamed ~250K.
Monark Nozzle Install Video - http://tinyurl.com/ptd2tge