Two notable changes were made in 1969 for the Mustang. First, several engines were updated to produce more power, which even resulted in new engines, including the Boss 302 V-8, two new 351 v8s, the 428 Cobra Jet/Super Cobra Jet V-8 and the massive Boss 429 V-8. The second change to 1969 Mustang was with the design of the car itself. All New sheet metal was used in 1969, sitting on a larger body, with a new grille design that used quad round headlights for the first time. Just shy of 300,000 Mustangs were sold in 1969.
The 1969 Mustang was also well known for some of the special edition models that have become collector items today. Most of these 1969 Mustangs featured significant performance benefits over the standard coupe/fastback model. Some of these performance 1969 Mustang models included the Mach 1, Boss 302 and the Boss 429. Some of these 1969 Ford Mustangs are pretty rare today and are only available for considerable expense.
Overall, there were several changes to 1970 Ford Mustang. The largest change included a redesigned grille with built-in headlights, and the addition of horizontal scoops into the area where the headlights were previously. Otherwise, only a few appearance tweaks were made to when compared to the 1969 Ford Mustang. Approximately 191,000 Mustangs were sold in 1970.
However, 1970 Mustang buyers still had lots of options to choose from when specializing their 1970 Ford Mustang. Both the Boss 302 and Boss 429 remained available for the 1970 model year, as did the popular Mach 1. With these models all still in the 1970 Mustang lineup, buyers had numerous performance models to choose from. The 1970 Ford Mustang also had a new 351 Cleveland V8, which replaced the previous 351 Windsor engine and had more power than its predecessor.