I drilled holes in the plate and fed my fuel, brake and electrical lines through the holes. Note the fuel line
going through the fire wall (directly into gascolator)  between the brake reservoir and plate (almost hidden
behind the brake line).  Also note the small rope (cord) between the rudder pedals.  This is a very easy way
to keep the rudder pedals from falling down. It works real well.

This is the only place I could get the compass to work.  I made it out of lexan, it seems to work ok.

This is how I vented my header tanks.  The blue line going down dumps out under the belly.  The FAA
make me safety wire it shut.  If you don't make some sort of vent you can't get the air out.  I know of one
forced landing on another Magnum because the header tanks had air in them.

Don't you love the fuel gauge.  Actually I really like them, I don't worry about faulty gauges.  The hole in the top is to let in light so you can  see the fuel in the window below.  For you non Avid folks out there, the wings are folded. I can see the fuel level in the window when I am flying

I really need to get those pedals as close the fire wall as I can so I installed turnbuckles. ( long legs )

This is my home made electrical bus bar (there was a lot of tubing so I could put it most anywhere.)

I didn't use fitting supplied by the factory I felt that all that leverage would put
too much stress on the screen threads which goes into fiberglass. Note the real close and short 90 degree fitting, also it is one piece pipe to hose fitting.