getting powerheads in my tank (acrylic) ideas?

[mikegray]

my acrylic 125 is weird at the top. no cutouts in the back. the middle cutout is 7" from the back wall so to put powerheads in i have to have the chord come out in the middle of my tank thats ugly and every1 will see it more than u want too. i was thinking about going through the overflow but its glued to the top of the tank so i cant fit a chord in that. suggestions. i have 4 maxijets 1200's i need in my tank.... just drill away? make holes for the plugs to come out in the back.? pics are being posted.
EDIT* that hole on the left is where my return line is going in.. so i cant use that and my powerheads are going to go in the middle of the overflows i have 1 on each side.... there gonna go on the inside of them. and theres 7"s from the opening.... how stupid huh?

 

[farmboy]

The acrylic should be easy enough to work with. THe problem is where to drill. I would put the hole in the top brace. A rule of thumb for glass is the edge of the hole should be as far from a corner/edge of the tank as the diameter of the hole. This is for strength in the glass tanks. I'm not sure about acrylic. Just my opinion. . .Hopefully someone more experienced with working acrylic will chime in. . . :notsure: