I am researching/considering an 05 GOAT and in my research I've found that GM didn't put the same gears in the rear of the GOAT's that they did in the CTS-V (something like caddy 2:83 and GTO 2:21). I am astounded at the difference's in acceleration that most magazines are siting between the two. I would think that the 6.0 in the o5 and up would make it almost a tie. I've also seen that the almost anything european that comes close in HP,weight and tourque seems to get both of them by a bit at the end of a quarter. being a car guy I know that the european's tend to select superior gear's inside the trans while it seems detroit adjusts the rear to get the stats where they want them. So, I'm trying to find out if anyone has upgraded the rear to meet or beat the caddy. It seems to me even matching the caddy would put the Goat's a few click's off the C6 and way beyond the heavier smaller engined caddy......Gear head's preach to me!