rofl. i doubt it. did you realize you are putting the sub inside a big metal box called a car? hehe. some sub enclosures are made from diamond plate, yes... chromed steel that is welded together. and subs work fine. im surprised those giant *** magnets dont destroy peoples cell phones when they get too close tbh.
if i were you, i would put the chicken wire in how you want it, then use some kinda paper or somthing and tape it over the entire thing before you stretch fleece so you dont get a million little chicken wire diamonds in the surface of your glassing. its going to take ALOT of sanding to get it smooth like that with the chicken wire imprints.
i still dont think that the chicken wire will have enough strength to support the fleece without buckling.....
mabye you could put random piece of fiberglass down over the chicken wire before you fleece it... or put a whole layer over it. and then do the fleece for a smoother layer...
i dunno. its gonna be tricky as it is.
definatly make the base\rear sides you cannot see out of MDF though, itl be much eaiser!