Fits 1964 to 1970 Ford Mustang, and 1 more make. See every vehicle
Doug's is the pioneering force behind the popular TRI-Y design for cars and trucks. The unique, shortend, paired primary tubes increase mid-range torque without sacrificing top end power. TRI-Y's are a great choice for daily drivers and heavy duty trucks looking to increase power from idle up to 4500 RPM while maintaining maximum fuel efficiency.
| Year | Make | Model | Engine |
|---|---|---|---|
| 1964 - 1965 | Ford | Mustang | 4.3L 260 V8, 4.7L 289 V8 |
| 1966 - 1967 | Ford | Mustang | 4.7L 289 V8 |
| 1968 | Ford | Mustang | 4.7L 289 V8, 5.0L 302 V8 |
| 1969 - 1970 | Ford | Mustang | 5.0L 302 V8 |
| 1967 | Mercury | Cougar | 4.7L 289 V8 |
| 1968 | Mercury | Cougar | 4.7L 289 V8, 5.0L 302 V8 |
| 1969 | Mercury | Cougar | 5.0L 302 V8 |