OY! Vat a day! watch for parts store seals...

Got the gearbox back together.  Everything seemed right, not many leftover parts..so we're good. Lol

The nice "new" transmission was bolted to the engine and filled to capacity. 3 US qts from empty.
Engine took 4.5. Blew out oil cooler prior to refill and trying Castrol gtx 20-50 per popular request.

Note: o'reilly and autozone tried selling a rear transmission output seal for the mgb that is NOT right ! It may be for a overdrive- but not the 68-80 4 speed.
 473234 p/n

Autozone on the left, one that works to the right.

Not enough hands for pics during the install, will try a transmission write up though.
At 103* I was racing the heat.

The only other vehicle that is as easy to pull and fit a drivetrain into is a jeep cj.  Simplistic and robust!
Anyway... in a mere 4.5 hours.. the car went from many many pieces to a working, very nicely shifting , better accelerating machine.  Just seems zippier. Especially 2500 rpms up. Probably the fact the valves are opening and closing like they're supposed to

And as soon as the last bolt was turned clouds and rain (first time in 2 weeks) started rolling in.  And the temperature dropped 13*.  Lucky me.