I'm finally just getting around to replacing my rear bumper and I also happened to notice that the part that the bumper bolts onto is rotted out and needs to be replaced. Not sure what the part is called, maybe the face bar?

 

Year, make, model, 2 or 4wd & look it up at rockauto.com or lmctruck.com

 

Yes:Rottidog is right on with his leads. Keep in mind,however,that these areas of the frame are the most suseptable to severe rust especially in New England units. My 96 that I replaced after I moved to MD was originally bought in ME and went through 13 years there;I retired it due to the fact that the frame was cheese from the bumper to the shock mounts;not a vehicle that belonged on the road even though it looked good and ran great! Inspect carefully first before investing in it! Just my advice! Best to You!