[greglepore]

Yeah, I'd likely keep it.
When I built my 3.2 turbo targa it was a 10-15k car. Had I left it original, it'd likely be a 50-60k car now, but as it sits, with the mods, non original interior, a/c delete, 17 in wheels etc I'm resigned to the fact that I cost myself 25k or so in value by building the car I wanted. So what? Sure, that's not pocket change, but I didn't buy the car as an investment, and its brought me joy.

As to what your particular car is worth, I agree the market has spoken. If the 70k isn't enough to make up for the loss of the car, by all means keep it.