Should I leave it Stock?

Do what makes you happy now. We don't know what the future holds. I certainly save for a rainy day, but when it comes to the things that make me happy now, I go for it.

For example, it's much easier to sell a house with neutral interior paint colors, but since I don't know when, or if, I'll ever sell, I go with what I like.

I kept my 66 Barracuda stock, but for wheels (70 Rallye), a Pertronix Igniter, and a dual pot master cylinder, for a long time. Then two years ago I said, screw it and upgraded the suspension and swapped in a 5.9. I'm enjoying it, and I really enjoyed actually doing the work.