I try not to push my opinions on other people, but I would caution you to consider Playing with TBI's comment before you go out and buy a bunch of air system parts, assuming your truck is a 5.7 or 5.0.
I am intimately familiar with two pre-94 5.7s that test & pass smog every 2 years in CA and do NOT have an air system (smog pump and air injection).
The tech will check the emissions sticker under the hood (and the shop's smog computer probably also checks against it's data) to determine whether he looks for an air system, the stove pipe, etc. on his visual inspection. If the smog pump is not on the sticker, (and the sticker is correct for you truck's vin) then you don't need to install a smog pump, etc.
If you don't have a stove pipe from your exhaust manifold to the snorkel, and the related vacuum lines and parts, I would focus on that, that's mandatory for the visual.
If you don't have your original under hood emissions sticker, i believe you can still purchase them from some dealers based on your vin number.
As a side note the CA 454's did tend to come with air systems, including a smog pump, even the super sports. hope this helps.