For a house built around 1981 with a standard 7-foot steel sectional door, the truck carries what covers ninety percent of that call: belt-drive and chain-drive openers in the common horsepower ratings, standard rail lengths for an 8-to-10-foot ceiling, and the wall consoles and safety sensor kits that match. We also carry battery backup modules, since a winter power outage with an iced driveway is exactly when you want the door to still open.
What we don't carry as stock is anything for a low-headroom or jackshaft setup - those get special-ordered once we've measured the specific bracket and track clearance on site, because guessing wrong on that hardware means a second trip. We'd rather tell you that now than show up short.
We also carry the mounting hardware for reinforcing an aging header, which comes up more than you'd think on houses this age - the original builder-grade lumber sometimes needs a backer plate before a heavier opener can be bolted to it safely. That's a five-minute check we do before any motor goes up, not an upsell added after.