Simple: Buy house first, make decent down payment and save a couple ground for Camaro. After you close on the house, amend last years tax return to get the $8,000 tax credit early. Use that money and whatever else you have saved as a down payment on the Camaro and voila!
This is somewhat of what I did, except I didn't realize I could get the tax credit early, so I'll just drop the 8 grand into the principal of the loan and then refinance.