I'd say that car is worth more than your truck (>$50k). It's a nice truck, just it is now used. This car will not have anything to detract its value. If the guy is spending $1000+ on headlights I'm guessing he put something into the underside too.

I didn't look at your invoice. Was the work done at DMC Houston? Looks like this car was living in the Austin/San Antonio area.

Now I have to say...all your posts bring a certain stink of disbelief. This cars in these pictures are known. The pictures also track into scam sites in late 2016...so there is also that. I'm guessing this "old guy" lives in that "town" from another more unusual thread on the board.

if it's for real and the two of you are happier with the other's vehicle, then I say swap away and be happy.