Haven't checked with a GM dealer yet, but yesterday our parts man at work showed me a part he just checked in for a 2007 Toyota Tacoma. It's called a wheel opening extension pad. It is the exact same welting as the 1st gen vibe, only it's black. For anyone who is interested, the Toyota part number is 53853 - 04040. It's a good bit longer than the ones on the front flares, so it's plenty to do any one of them. List price is about $16. I have 4 ordered.