I've got the original carb for my setup, but it's pretty badly corroded and stuck. I'll see if there are any special markings, but it looks just like the Bendix/Zenith from a shovelhead with the optional accelerator pump setup. I've heard that the carb of choice for these draw-thru setups nowadays is the Mikuni HSR40 or HSR42 flatslide. I just can't quite justify the cost when a good used Bendix is 50 bucks.