It's important to restore a G2 back to operating condition even if it's like keeping a British Leyland built car on the road, for historic purposes (and the challenge).
Err, well yeah maybe. The sticking point is finding a G2 body that doesn't have flogged out governor vane and butterfly shaft bores. Fully complete G2's aren't exactly thick on the ground, either.
While boring/rebushing is likely technically feasible, that'd require a very high skill level, and a decent machine shop setup.