[ricott]

I looked at my wife's 2007 Envoy Denali (V8/4WD) tonight. The tranny tailshaft (after the transfer case) looked to be the same as you have. The rubber tranny mount appears to be made for the bolt pattern you have on your tranny. The tranny mount sat between the tranny and the crossmember (on top of the crossmembe). Your tailshaft looks to low based on my wife's car.