I think I finally found the flaw with posting wanted ads if one is looking for a vehicle.
They require reading and comprehension skills...
So far I've been offered *every* other model of the particular car I'm looking for, with the exception of the actual model I'm after.
And clearly, "unmodified or very slightly modified" really means "kevved up to the max".
I'll go back to looking through the ads myself, I think.