Mike & Fran wrote:
Thanks for the info!! I have an 02 with the 310 hp, but my brother just bought an 06 and he was wanting to know. I told him i thought he had the 362 but got to looking and was not sure...
It still could be built on the 2004 chassis with the 310 hp., 2 valve per cylinder V10. The easiest way to tell as previously mentioned is look at the end of the shift lever. If it says TOW/HAUL it's a 2006 model with the 5 speed transmission. If it says OD ON/OFF it's a 2004 with the 4R100 4 speed transmission.
Many manufacturers buy chassis in lots and build bodies as ordered. It's not uncommon to see a 2006 (or any year for that matter) built on an earlier model year chassis.