looking for help any info would be great. size, make, model,

 

used a 32mm SU carb off of an MG motor. That was a while ago, they may still be around. You will have to make an adapter for anything I would guess.
Mikuni is good, even the old Linkerts were good carbs, stay away from the Tillotson though.

 

Dunno if he's still got it but at the Antique rally in Eustis FL this year during bike week, "Charlie three fingers" had an original DC linkert for $150. That's the original carb that S&S side float bowl FUEL carbs are modeled after. It's a rare item and I think was original for most mid 60's "45's". He writes articles for "Full Throttle Magazine" of Florida and probably could be tracked down thru them. He's a great guy and would love it going to someone for an original build.

andygears