i think i should send u my heat shield picture to c is it crappy or wat ... lolz
by the way, the heat shield box is to prevent the pod to sux in those hot air from engine and radiator and intercooler, ya, its ture the heat from engine and raditor will still heat up the metal shield, but if u have enough cold air goes in to the heat shield box, that will be no problem ... when the cold air goes ito the heatshield box, it goes straight in to the pod, the shield dun have enough time to heat the fresh air from outside ~

i m usimng 0.8mm aluminium board to make this shield, it's tough enough ( u can try 1mm, but its gonna be a bit hard to band it) and also u can use silicon to seal the edge of the shield will be perfect. i m planning to get some thing have heat resistance to cover the box (real carbon fiber sticker will be good) ... but hard to find ... hope my friend can get me some from hong kong