A 1967 Mustang Fastback Lost Its Entire Engine Bay — Builders Moved the V8 Behind the Driver Instead by Jack Harmon A 1967 Ford Mustang Fastback — one of just 71,042 built that year — is getting a full mid-engine conversion and a custom widebody kit to match. Here’s how builders are reshaping a factory icon to hide a drivetrain Ford never engineered it to carry.