hotroddin a homelite

[big1079]

I am lookin to rod a 750. I was told it has a third port?Is this similar to a boost port that would normallt be machined in. Does a 750 actually alredy have this?What kind of revs can I expect with a pipe and cylinder work?And what would it take for this saw to handle a 10 pin rim with a 20" inch roller?thanks for any help.It is greatly appreciated..........