Here is my GMC, a 1963 GMC ALF pumper.  Built this one in 1982 using an original 1963 Chevrolet pickup from AMT, the pump and pumper body with accessories from an AMT ALF 1000 Custom Pumper, the chassis from the AMT Ford Louisville Race Car Hauler, and the wheels and tires are from the AMT Ford C700 NAPA van. The engine is a Chevrolet 409 from the AMT 1957 Chevrolet while the trans is from the NAPA van with a PTO from the Autocar dump.  Fenders were made using Elmer's expoxy putty shaped to the proper contour. 
 
Thanks, 
A.J.