Starting down the standard path myself. I was able to snag a cheap MB airbox from eBay, said it was from a 430 but it had the v6 nose piece included. I asked to make sure and the guy insisted it was off a V8 so I risked it. Worst case I got the v6 nose piece for a little more than the going rate with a free v6 airbox attached . Will pick up the tubes from the dealer and start looking for the bigger TB. Once that's done try to extract a refund from this and get a tune provided nothing new has developed (ha)