
Hi from a sunny Sydney Sunday,just been out on my GT750A,not far, but still wearing the GT grin,!
I know exactly what's wrong with the air box/carb alignment,I have a friend with a restored GT550 1974 "L" model.There are differences in the frames between models & this causes problems with fitting the air box/side covers,the only way he solved the problem was to do away with the original air cleaner & fit carbie pods,

It looks like your bike might be a bit of a "bitzer" as his is...?

You can check engine/frame numbers for Suzuki's year models by google search "Suzuki Engine & Frame Numbers"
Hope this helps out...I'm sure you'll enjoy her once you get her sorted out to your satisfaction...!!
Cheers,
GT750Battleship.
GT750Battleship.