Pictures? Engine health (compression/leakdown numbers? failed head studs?) What were your specific upgrades? how's the top/rear window? any accident history? Color combo?
it doesn't matter how much "you have in the car".. there is an inherant cost of car ownership (maintenance, insurance, depreciation). Some might argue that without your "$30K" in the car, it would only be a $8K car
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I don't really follow the Cab market, and yes, the SC was the first year of the Cab, but imho, over $20K would require a really excellent example.. not one strewn with rock chips and I am sure Ohio is not a strong market for these cars either.