Rubbermade. the only plastic i have is the bottom trim and the bumper covers. you must be thinking of the avalanch. but she sounds great. the range from 2000-3500 rpm she is really grawling. and has much punch to it too. yeah i have the 4.0 next year ford is putting a V8 5.4L. Which sucks cause i just bought this one. that always happens to me.Looks good, those trucks are a little to "rubbermade box" for me. How's she sound, do you have the 4.0?