I'll be curious to see how long mine lasts. I also did not go with the Toyota OEM. I've got a bit under 15k on it so far. Working from home now so I'm not racking it up as quickly as I was when I was driving 300+ miles every week.

Whenever next time comes around I might try to see if I can do it with the engine still in the van like you've done. I'm glad I did the removal the first time around because it made it easier to do several other things I figured I'd do while I had it out, but I'm not exactly looking forward to repeating that whole affair in the driveway again.

Maybe I should go buy an OEM Toyota gasket to have ready on the shelf in case, while I know they're still available ...