The color scheme makes it look like a '91 Dodge Stealth

I'm sure someone's cutting some R171 era SLK body kits down to size out there. There are quite a few "panel beaters" in every UAE city to adapt just about anything.

As for the noise, it wouldn't surprise me if the poor sod swopped in an engine from an SLK 230. There are quite a few R170 era cars there and since it's getting harder to register the older cars, Crossfire owners with motor problems may use them for mechanical parts. Also note cars out there run sans catalytic converter ... I think it may be missing the resonator as well.