Regulator

I just bought a new gun from my friend and dont know a lot about the ups he has on it. I believe its the regulator but i could be wrong. The question is where the macro line connects to the regulator he had it coming out the side and i want it to come out the bottom where it will connect to the drop(32 degree) i bought. Is this possible and how do i go about doing this. Im not sure if i take it out is it goin to leave a hole where the fitting was or is there something to put there? im confused and tryin to learn as much as possible but goin from a 68 carbine to a BKO is a big change for me. here is a pic to help out

The guy is correct that it's a vert. Max-Flo.  Connecting tothe bottom isn't an option.  The hole on the bottom is where air from over-pressurizing bleeds out.  Don't mess with where the airline is connected.  All of the other connection ports are worthless and a crappy decision from SP.  Just another place for a leak.

The macro hooks up just fine from it's stock location.  Just remember not to run the line too straight or it may pop off.  Notice the curve in my line.  Hope this helps