What mods? Here ya go...
My "Aggresive Desert" porting that I do, and my Re-chamber high compression "HEMI" head. The cylinder also has its tranfer ports enlarged and matched to the engine case. The porting is phenominal and is a perfect match to the head and DMC Alien pipe. Power output has been effectively doubled. The nice part is that I can still run "Premium pump gas" with no detonation,and still run the stock mikuni vm 26 carb and the stock oil injection! Yes,you read that right...the stock carb and oil injection! A larger carb will help a tad more at the top of the rpm range. I might play with one later on,but for right now the stock carb works flawlessly and is easy to tune with all that air velocity running through it.