what does it matter what it's worth? And I think you could sink even more money into a Supra. I think it's why they are so expensive for the upgraded one. They've lost their ass in all the mods they've done to it.
Just an FYI, I was looking at your car as a potential purchase. Great build up you've done.
And by the looks of your house and where you live I don't think you need to get rid of your car.