bagdb2200
+1y
The 700r4 does not need a computer. It uses a TV cable to control shifts. The 4l60e needs a computer as it's the computerized version of the 700r4.
For the swap, you're just gonna need your engine/transmission and axle you want to use. You're going to want to get an aluminum radiator, and will probably have to mount it farther forward in the core support than the factory one for fitment. And also get an electric cooling fan, for fitment reasons also. You're probably going to need to modify the engine crossmember a little to fit around your oil pan depending on where you end up positioning the motor. You're going to have to make/modify the transmission crossmember, and make your own motor mounts, or buy some swap mounts and universal weld-on frame tabs for them. Then run some exhaust for it.
The rear end you'll have to figure out if you want to stick to leaf springs or do a link setup/coilovers, etc. If you keep leafs, you'll probably end up having to put new leaf mount pads on the axle unless you get lucky and find a 9" from a Ford that has the leaf springs at the same places as a Mazda.
There aren't too many parts you need for the swap, just a decent amount of fab work to get it all in.