Any materials scientists out there???

What is the existing airbox made out of... ABS, HDPE???


www.burnlounge.com/mp3me
'00 Rodeo LS 4x4; "K&N" cone filter; S/S Manik Front, Rear, & Nerf; 'Modest' sound system; 1.5" R'ooper lift, 265/70/16 Dunlop RVxt, Skyjacker Hydros, OEM LSD (sans G80 code)