Dave,
Straight to the point.
http://www.atvunlimited.net/servlet/the-35687/MIKUNI-32MM-TM-FLAT/DetailYou won't beat the price, which is why the carburetor on my Fireball came from this very link.
If you are serious about it, go ahead and also ask these guys for a 6DP17 needle, 389 series P4, P6, and P8 needle jets, along with 180, 190, 200, and 210 main jets.
Your stock throttle cable should be fine, same as the pilot jets I gave you for the VM28 mikcarb. You might want the choke cable conversion from Sudco but that can be done later.
This is the only way to go if you have the faintest dream that you will eventually Fireball. There isn't a Fireball out there not running this carb, far as I know.
And last thing, ask Tom about his gorgeous custom intake manifold made for this.
Justin