I was looking at their site and they offer a 40mm and a 45 mm carb.. They look wierd..
http://www.team-pami.de/images/Bomba...s7602gross.jpg you can see it up in the corner.. Is that an older Mikuni 45? or something else?

 

I'm not sure. it appears to be a mikuni, but not the HSR because the choke **** is on the other side, and the air screw is on the bottom instead of on the side.

 

I think they have changed it to a TM?48

 

HSR = TM, don't know why they have two names for them. seems like the 48 is the same body, but bored bigger, not positive.
Bigwaynester has the 48mm on his 760, he might could answer that one if he comes across this thread.