I also have a ton of snow, not crawling under the truck at this moment to get a measurement.
TWest - do you already have some measurements and coresponding part numbers? That list would probably be VERY helpful as is, and those that are not listed together could be filled in by people who could get some measurements.
I am assuming that the early G-56's and the later G56's, even though their gear rations are different, the transmission case would be the same?? So, 2005. 5's through 2008's would take the same shaft. There was comments that the QC's with 8'beds and the MC's end up being the same also. It would be nice to know the similarities and differences of our trucks, good for cross-references.
CD