headers on stock pipes?

[1ndatrunk]

I've been contemplating pulling the smog/air pump from my 88 TBI suburban just to clean it up under the hood and to also add a second alternator in that location at a later date. The stock manifold has ports for the system, and rather than trying to plug them and invite leaks, I'd rather just run headers.

If they exist, can anyone link me to some budget headers that can just be swapped in without any mods? I'll get true duals at a later date as cash allows, but for now I want them to bolt to the stock exhaust system.
Thanks guys