When I was 17 years old and a new 74 Commando my best mate had a early 70s Ducati 750 GT it had Amal carbies fitted from the factory, we rode very hard together, he couldn't beat me and I couldn't beat him the both bikes where such a match in performance, have some great memories riding together, we were best mates all our life's since the first day of school till his death a few years ago, I have a pic on the wall in my shed with his Ducati and my Norton together on top of a mountain range we use to race each other down but I had ran out of petrol, I forgot I had both fuel taps on so I could get more fuel into my carbies to get in front of him.
So you have a great bike there, not sure what year my mate's Duc was 1972 model with Amal carbies and fibreglass tank, anyway yours looks great and have fun with it.
Ashley