the only way is to take it to a body shop so they can put fiberglass over the cracks and repaint it, or get a new bumper its up to you. you can repaint it again without fiberglass but the cracks will show up again eventualy..
you should reinforce that he should get the SD Air Dam....
thats what I think he should do, haha
2005 IBM Pontiac GTO, Built 4.8L .84 Twin Turbos
1998 Pontiac Grand Prix Daytona Edition, Sold