I think most of what is on your list will work, although the early engines are not rocker cam engines and the flywheel and clutch are smaller diameter and lighter duty units. I would worry more about the steering assembly, wiring, gauges, depending what all you plan on pulling from the donor. It's more straight forward to have it all from one model, particularly when it comes to wiring harnesses, unless going the painless route.
If you are planning any engine upgrades the biggest issue with an 86 or earlier is that the pistons are not 'fly cut' so that if you use a bigger cam or change to bigger valves or higher rocker arm ratio's you will more than likely have contact between the valves and pistons. If this happens just once, you'll be looking for a new engine anyway!! I say keep looking for an 87 to 93. The bits you don't need can be sold on this forum.
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