[suicideneil]

Tools:

Vertical mill
Drill press/ pillar drill
Hacksaw
Tap and Die sets
Drill bits and end-mills (like a drill bit, but with a flat tip)

For a smaller mount, you could do it quite easily with a vice and a hacksaw, and some files, but for something so large, a properly equiped mill would be needed, especially with thick pieces of aluminium.

As for which vehicle to convert... take your pick. Try looking in the buggy section, or for something more simple, consider a Revo.