im looking for an injection pump for my dads 91 model 1 ton without an intercooler. need to know where i can get one new, used, or rebuilt. its for an all stock truck. i dont know much about the 1st gens so all help will be apreciated.

 

http://www.usdieselparts.com/category.cfm?Category=1010

You can also pull the pump and have a local pump shop rebuild it for you. Look in the phone book for places with names like "Fuel Injection Service of Texas".