Latus Motors offers a 58 mm throttle body / manifold that they developed with Dan Baisley. It offers interchangeable venturis and is also cruise compatible.
I went with their throttle body on my SE 120R in my 06 dyna. The only mod to the crate engine was a set of SE roller rockers and it produces great results. 139.92 hp and 133.7 tq.
The SE 58 mm setup is a direct match for the head ports and it is pretty easy to make up a bracket for the cable, I simply welded on the cruise linkage to the 58 that I cut off an old tb. I also did this last month on a 120r.