Differences in the years?
-larger brakes
-scooped hood
-50 more hp
-35 more ft lbs of torque
-18 more cubic inches of displacement
-500 RPM higher stock redline
-dual exit exhaust/rear fascia
-clearcoated wheels
-drive-by-wire throttle setup (no linkage)
not to mention that the 06 has black tails, not the red like 04/05.
But on behalf of the '04's......I really enjoyed mine...had none of the issues many complaind about. If buying fron a dealer, I'd make sure to run down all repairs and TSB's. Its a good car.....If you can get it on the cheap, go for it.
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Now for "making a LS1 a LS2", its not going to happen. LS2 will always have more displacement. Sure you can mod the LS1 to exceed the LS2's stock power, but mod for mod, the LS2 wil always be a few ponies more. The LS1 will be cheaper to mod and there are WAAAY more LS1 specific parts then there is LS2 parts. (for now) And the LS2 has oil consumption issues that the LS1 did not have.
Its all 6 of one, half dozen of the other. I'd just say buy whats in your budget for a car/mods you want to do and go with that. Good luck!
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Now for "making a LS1 a LS2", its not going to happen. LS2 will always have more displacement. Sure you can mod the LS1 to exceed the LS2's stock power, but mod for mod, the LS2 wil always be a few ponies more. The LS1 will be cheaper to mod and there are WAAAY more LS1 specific parts then there is LS2 parts. (for now) And the LS2 has oil consumption issues that the LS1 did not have.
Its all 6 of one, half dozen of the other. I'd just say buy whats in your budget for a car/mods you want to do and go with that. Good luck!
It's only the '06s built after 2/06 that have the leaky struts. Early '06s and '05s are fine (aside from the ONE or TWO freaks).

Also, the LS2 oil consumption problem is only well-known because of the severity of the few engines that suffered from it (most of which were warrantied anyway). MOST LS2s do not use any more oil than the average LS1 (which is another engine known for being just a bit thirsty on oil).
Ummm, duals and a clean looking hood rather than lund hoodscoop wannabes....
and the split rear exhaust, looks like a grand prix rear bumper to me with the gray insert, the 04 rear end is much cleaner. All about the MPG's....when I drove mine from STL to Texas I average 28 MPG....thats better than a lotta ecotecs


you're a dick... 
