smog question's on a 76 k/5

[factory2wdblazer's]

i've been looking at a 76 k5 4x4 but it need's to be smoged. i have never really messed with a truck, that need smog so the smog is all new to me. i don't know were any-thing goes or what's soposed to be there. i noticed that there is no smog pump, so i know i will need that also noticed there was no cat's on the exhaust system. but what else is there??.............the gentlemen that is selling the blazer say's that it's a small block 400, bored 30 r.v it has long tube headder's will tis motor even pass smog like this.