Yes I had noticed the 'mach3' on the back ! Its actually not that bad in real life but will probably also be coming off once the front bumper is sorted.
The only mod I like is the 07 bonnet, I prefer it to the earlier one. Engine is stock I think, it certainly felt quite pedestrian compared to the M3, I think the only mods are an exhaust.
I've no issues with mods just think 90% of cosmetic ones don't work.