20' CC -- where to locate tank/center console

[boatdotbay]

Hi,

My brother is picking up a 1974 20' CC that needs to be rebuilt. The boat will get a bracket along with a 115 - 130 4stroke.
He's going to build his own center console is there any recommended location fore/aft to put the center console to help balance the boat? He also needs to put in a fuel tank -- recommendations on maker and how far forward to place it?

Thanks!