Produced in Mexico? Dude is on crack.
Also, most camaros (I don't think LS does) have rear parking-sensors now.
There is no 'export only' version of the car. The only changes probably made would be taking a Canadian spec car, adding emissions equipment to meet EU standards, removing OnStar equipment, and that's about it. There's also an RHD version in the works for the Isles and Australia but that's about the extent of what export mods will probably be done to the current car.
As for rear parking sensors, the up trim (2) LT and SS cars do. AFAIK
the 1SS, 1LT, and LS still lack them.
Though I think they may now be added as part of the RS package.. which for an appearance package is totally stupid when you're putting a line of zits on the ass of that car..
So to sum it up:
You're being conned. The "Eurospec" version is simply a hacked up version done by the agent to prey on uninformed buyers. It's a good thing you're doing your homework. Also check the fees they're asking on top of import taxes..
But back on topic: Are you looking for Economy, or raw rip your face off Americana?
Economy: 2LT/RS with manual gearbox. 304 horses US rated EPA 29mpg highway. Leather interior, iPod/mp3 interface, Pirelli Z rated tires and 20 inch rims. Turbocharging it has shown that the 29mpg rating will still hold under mods, which is nice if you're paying out the rear for fuel.
Raw rip your face off: 2SS/RS with a manual gearbox. 426 horses while still making 24mpg. RS package gives you the 20 inch Midnight silver finish on the rims, Pirelli Zs are stock. Granted you'll need 93 octane or equivalent to get the full range of power but it'll cost you with the EU/Swiss Taxes on fuel.
It just depends on what you're willing to spend.