no plastic door. there may be a plastic cover underneath the car on the newer models but not on mine. check this out http://camaroforums.com/forum/4th-ge...-method-63702/
its in the faq and how to sticky at the top of the 4th gen seciton.
you have a part number for the pump check here they have reasonable prices for oem parts. RMS Products: GM F-Body, Fuel System
there is also aftermarket pumps for around 100 bucks. check rockauto