I noticed something while watching the live action short for halo, the weta armor seems to have a very strange similarity to that of the colonial marines smart gunner armor, well the chest plate atleast, from what ive seen its very possible to modify it. Ive see people making these plates before. Though u will need to possible hammer out metal sheet...clamps and hammers..does wonders.
http://binarybonsai.com/sitesdir/aliens/im...chman-armor.jpg
http://binarybonsai.com/sitesdir/aliens/im...chman-armor.jpg