OK, I'll answer you. You must be new here so your terms are a bit hard to catch, probably the reason why nobody answered you. I think what you mean by "bumper line" is the moulding right? If your moulding is damaged for some reason and you want to get it replaced, you can get them piece by piece for whichever location (door moulding set of 6), bumper (think so, never bought). However, if you are looking to upgrade, there are limited resources. Easiest aftermarket moulding to get is the M type, flat back and is original (or replica) of the M5 factory made. In US they do sell the same colour ones as the car but I never asked here in Malaysia. Give the spareparts dealers a call to enquire. Spray painting is a bad idea as the moulding material is not one that can be coated readily. Good luck.