IIRC, the Courier had interference valves, so when the timing chain went, it at half the valves in the head, and ate many a head and pistons. The engine guy at Dixon Ford in the early '70s hated them. (That was a whole 'nother life ago!)
Like I said - Mazda gave up on building small trucks whenFord stopped selling them as Couriers - and started selling ford designed and ford-built rangers rebadged as Mazdas. The Mazda 5 speed is used in the Ranger and the F150 - the only "good" part from the Mazda parts bin.
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