IMO if your having trouble coming up with reasons to put the time / money into it, look at it like an investment.
If your only going to get $7-8000 as is, but could get $12000 closer to completion, then it might be worth your time and effort to finish it.
That truck would be worth alot up here in Canada
It's beautiful.
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-- Tall, Dark and Handsome... Or so my mother says
-- There is no fate, but the fate we make.