Complete unit that will be sold at no reserve. The engine has been started and runs well but the mechanical fuel pump is not working. All tires hold air.  I have a clear title. Vehicle has sat for many years but has many valuable parts. Engine and transmission alone are worth a couple thousand. This has the 455 Olds engine.  NO RESERVE. 

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On Jul-16-16 at 21:04:16 PDT, seller added the following information:

I have been informed that this year gmc used a 403 cu in motor, NOT a 455. Thank you for correcting me