That's true e30tOny, thanks to the M42 I haven't received a single speeding ticket. LOL
Kamil, I would wait until after the motor swap to install those 16" or 17" wheels, you will notice a reduction in overall performance. As for turbo M42 I would check out the write-ups on M42club.com, I have to admit I'm very tempted.
I wouldn't suggest a colour change or sanding down the corrosion protection unless you have extensive chips, dents, fading and scratches.