Ford Mustang (Mustang II)

Start with identity, paperwork and originality. For the Ford Mustang (Mustang II), the strongest cars have a continuous ownership file, VIN and door-tag consistency, a Marti Report where available, original window sticker where possible, and evidence of major service work by recognised Mustang specialists. Original paint, correct decal and stripe schemes (Cobra II / King Cobra), documented V8 build, unmolested interior and complete original wheels and trim are decisive; reproduction stripe kits and tribute cars trade well below documented originals.

The 2.3-litre Lima I4, 2.8-litre Cologne V6 and 302 cu in Windsor V8 are all mechanically straightforward, but early smog-era emissions gear, thermal-reactor exhaust manifolds and California-spec calibrations vary sharply year to year — verify what is fitted against the original build sheet. A proper pre-purchase inspection includes cold-start behaviour, compression or leak-down testing where appropriate, factory-tool diagnostic scans on later cars, underbody photography, suspension and chassis-point inspection, brake condition and a road test long enough to expose heat-related faults. Deferred maintenance is almost always more expensive than buying the better-sorted car.

Mustang bodyshells are unibody steel and vulnerable to hidden collision repair and (on earlier cars) corrosion in floors, torque boxes, cowl and rear frame rails. Use a paint-depth gauge, a lift inspection and a specialist familiar with the generation. Documented cosmetic restoration is acceptable; concealed accident or structural repair must be priced severely, and modified cars must be judged on the quality and documentation of the build.

1978 King Cobra V8 with the four-speed manual, and clean 1976 first-year Cobra II hatchbacks in the original white-and-blue scheme, are the two clearest collector tiers. V8 Mach 1 cars, particularly with T-tops (available 1976–78), form a secondary tier; base I4/V6 Ghia and hardtop cars are the everyday-user pool. Colour, transmission, option packages and limited-build variants move values significantly. Buy the best-documented example in the most desirable specification you can justify rather than a tired example of a rarer derivative that will need years of corrective work.