Do you ever do anything except post questions?
Anyway..
Mecha Customization is pretty easy once you get a handle on it..
Quoting: Strongarm.txt
Mod Head
Size 1
Armor 2
Mass 3
sub
Sensor 2
end
This is the code for a head module, It is SF:1 (small Mecha) becuase of the Size 1 tag (the tab key is used for achieving the margins), and it has a class 2 sensor installed in it.
If you changed the Sensor to a value such as 42, you would have a totally unfairly strong sensor (AFAIK there is no upper limit to how high a class on a component can go) so lets just change it to 5.
While we're at it, lets give it a bit more armour to help protect the sensor from headshots.
Quoting: Strongarm2.txt
Mod Head
Size 1
Armor 3
Mass 3
sub
Sensor 5
end
Almost all the attributes you see in the text files are the same as you will see in the game. It's just a matter of substituting numbers to make things better or worse.
I would write a longer guide, but most of it is pretty self explanitory.