trplezro
+1y
The 84 and earlier are the MA engine code. Timing chain instead of timing belt is one of the major differences. Trust me, they won't bolt up to the others transmissions. I've seen plenty of people try under the same assumptions, hell I almost did myself until I dug deeper into research, along with Nick's help.
You can search on some the ford courier to locate parts too since many of them had the 2.0 MA engine.
To put it simply, They changed every single thing in 85. Nothing is transferable.
You're engine swap options are pretty good with ford engines. I've seen plenty of 302 swaps. The most common 4 cyl swap in our years is the 2.3L ford engine. Since the Courier ran that engine in addition to the 2.0 mazda engine. Motor mounts and the usual stuff have to be made, along with a front sump oil pan/pickup.