yeah you'll need the air pump setup..
what really sucks is that not only will you have to buy the more expensive headers, but you'll have to buy new AIR manifolds too for the new headers
which are fairly pricey... Doug Thorley headers has a *****in set of air-injection headers, and thorleys are some of the best headers you can buy. Thats what I run on my truck... if you dont have inspection for a while, you can just buy the legal headers and plug them with pipe plugs until you have the cash to complete the setup, or until you have to get smogged. thats also what I do
anyways good luck
mike