Thanks for clarifying D.
I want to use the top tube, so I guess I can just put the chassis drain way up front somewhere, and not worry about closing it off.
I have been covered in oil before from the breathers when blowing up, It is not so much trouble in the sand, but on the dragstrip I have to contain it better.
I will vent from the valve covers, the video just goes in depth on what goes on when a piston lets go, and the necessities of sufficient tube diameters.
Its a precaution more than anything, as I have a bad habit of blowing stuff up...