$300 a head sounds like a great deal. I'll check on those Monday, thanks! So while I have it in the shop any other ideas I should have done to this truck. I have always had diesels for my tow rig. I picked this one up at an auction in great shape for under $3k and it have been a great tow vehicle.

 

Replace the plenum plate, and gasket since it is going to have to come off anyway..... You can get the plate from ebay pretty cheap. (and they are fine.)

Full tuneup, if you haven't already.

Timing chain and gears if you are feelin' froggy.