One Cruz. Nine vocabularies.

Inventory is measured six ways and priced by the hour.

Alloy and temper combinations multiply faster than anyone can memorise.

A substitution that looks equivalent on paper can fail on the press.

The market moves weekly and no two units tally the same.

Every job is a bid, and every bid is a moving target.

The catalog is enormous and the substitutes are undocumented.

Compliance paperwork moves slower than the product does.

Product expires while the paperwork is still in transit.

Fitment is the whole job, and it lives in a dozen catalogs.