smog pump ?????

In short the main purpose of the smog pump is to act like a blast furnace and pump fresh air to the cats, to prevent premature damage.

If you do not have cats, you can just remove the smog pump if you want. If you go this route, just get a shorter belt to compensate for the lack of the pump.

If you want to try and find the hose, check out www.50resto.com