Weight of MGB synchro/non-synchro transmissions

[James <James@LWSD.com>]

Had an interesting conversation this weekend with someone who;s had some
experience racing MGBs. He told me that the early (no first gear synchro)
transmission was significantly lighter than the later (all synchro) one.
Significantly, as in more than 100 pounds> As losing over 100 pounds of
dead weight would be like getting a significant horsepower boost for free,
I was intrigued.

Does anyone on the list know the actual weight of the different MGB
transmissions?

- James Einolf
1974 MGB (sure looks sad, up in the air with no front suspension)