37 Shops providing repair, maintenance and upgrade services for motor vehicles, namely, conducting engine and transmission oil changes and oil filter replacement, replacement of cabin filters, maintenance of air conditioning systems, repair and replacement of brake pads and rotors; installing automobile performance upgrades; custom fabrication of automobiles; repairing, overhauling, upgrading and rebuilding automobile engines and transmissions, clutches and flywheels; conducting vehicle diagnostics; installing and balancing tires; conducting wheel alignments; performing automobile pre-purchase inspections; installing oil coolers; installing performance upgrades, namely, performance alignments, corner weight balances, coil-overs shock absorbers, control arms, sway bars and springs, big piston calipers, rotors, sport and racing brake pads, race fluid, steel braided lines, air cooling ducts, flash tunes, and DME upgrades, fire extinguishers, seat harnesses, seats and brackets, roll cages and bars, limited slip differentials, performance clutches and flywheels, piston upgrades, billet internals, exhausts, headers, test exhaust pipes, catalytic converters, mufflers; performing cryogenic cleaning of automobile undercarriages and engine bays; installing automobile conversion kits; providing race track support services; restoring vehicles