[Hectic]

Must be a 3/4 port with a sorbo and maybe short stroked?
Mostly if you use the arnies list as a reference you can go close to whatever the largest is for your cylender and get maximum fps out of a setup snd decent consistancy. But for the most part 300-400mm is ideal length (is a lilconflicting as there hasnt been alot of testing)
I personally have always had good results with 4/5 cylenders running 455mm inners but now i got the full cylender so ill up it to a 509 one of these days.