[BigAls87Z28]

There is no trim level on the concept, but there are clay models with Z28 badging on them. There is too big of a fight between enthusiasts on which trim level is really the ultimate trim level, Z28 or SS.
As for 3 engines, think of it this way.
Its MY2007 and the Toyota Camry has a 270hp V6, the new Saturn Aura has a 255hp V6, the Honda Accord has a 250hp V6, Toyota Avalon has a 280hp V6, not to mention the Nissan 350Z has a 300hp V6. Next year, the Mustang will get the brand new 3.5 Duratec V6 said to make between 250 to 280hp.
Do not expect anything less then 250hp either out of a cheaply produced 3.9 OHV engine with VVT, or maybe moving the whole segment and having the V6 Camaro come in at 300hp with the new 3.6 with direct injection that will debut in the CTS in Jan. At 300hp, that gives the Camaro an awewsome performance jump, and would be priced right around Mustang GT. This would also undercut the 350Z's price with the same type of set up. This could finaly give V6 owners a sporty car to play with, instead of feeling like they had to settle for the V6 model. The V6 model is very important to Camaro's future.
As for the 2 V8's, it seems as if the LS2 will be gone by 2008, and incomes the LS3, a 6.2 V8 making anywhere from 400hp to 475hp. This is said to be the top of the line engine for Camaro, and a 350-370hp 5.3 will be put into production. I have to look into that more, but I would assume that the 5.3 going that much higher in performance would not leave a lot to be done as they would be maxed out. A detuned 6.0 motor is used in Austraila that makes 365hp or around there. That could leave a LOT of room for mods and make LS2 power in no time. Only problem is that this 6.0 might not feel that responsive compared to, lets say, a 350hp LS1. A benfit of the detuned motor would be running on regular gas with a lower compression ratio along, and less fuel to be used, which could all increase gas-friendlieness.
Im not worried about the V8 models, its what they do with teh V6 that I am really interested in.