So this thought has sunk in over the last 3 months or so:
Our little Datsun 1200 is pretty much optimized / finished. There are a couple of small things that need servicing but none of those are slowing the car down.
Over the last 33 years I've raced / run the car it's been getting major upgrades every 3-5 years.
For the last 3 years I've been running it as is but in my mind I'd always assumed I be developing it some more.
While now I've arrived at that Nirvana where I drive and enjoy......................................I'm not sure I know how to behave in Nirvana.