What do you classify as "easily"??? Is it having larger valves with smaller stems installed along with guide work and fully porting the head. Are you achieving 185cfm or more on the exhaust side at the same time? How many hours are spent doing the port work? What port volumes were achieved?
Since you say "easily" I'm sure that means there must be a good amount of flow increase left to be had if you tried harder....
Post up your number from the flow bench you used and which bench it was.
