Looks like early CV carbs. Unfortunately, those can be a real pain in the ass; if the bike has sat for years the rubber diaphragms will have certainly dried out and may have already ripped. Otherwise the first time you get 'er going and rev up they'll tear.
The replacement diaphragms/slides for my '84 Shadow were about a hundred bucks each.
Pop the tops off the carbs and take a look, find out what you're up against.
I've got one that was all stiff and almost brittle, I've had it soaking in 50/50 STP and MMO for two years and it's finally supple again.
Probably not as good as new, but I'm hanging on to it as an emergency spare.
-K