What engine is in a 1969 Mach 1?

What engine is in a 1969 Mach 1?
First generation (1969–1970)

First generation

Body style
2-door fastback

Powertrain

Engine

351 cu in (5.8 L) Windsor V8 351 cu in (5.8 L) Cleveland V8 390 cu in (6.4 L) V8 428 cu in (7.0 L) CJ/SCJ V8

Transmission
3-speed automatic 3-speed manual 4-speed manual

First generation (1969–1970)
First generation
Body style 2-door fastback
Powertrain
Engine 351 cu in (5.8 L) Windsor V8 351 cu in (5.8 L) Cleveland V8 390 cu in (6.4 L) V8 428 cu in (7.0 L) CJ/SCJ V8
Transmission 3-speed automatic 3-speed manual 4-speed manual