Originally Posted by spartanman
Looks like fine grist for an awesome project. 32 mm is probably a little light in the loafers for that motor after it's modded. For non-AHRMA flattrack races, I ran a 34 mm Mik on my '67 250 Pursang which worked perfectly. AHRMA Classic 250 limited carb size to 32 mm. Have fun!
This guy had a 34mm mikuni on it (you can see in the pics.)