[sixtiesmuscle]

I don't think it's possible to be that exact with a definition of a "ZLX" motor. Like the term "Phase III", we want to identify exactly what that includes, but, it wasn't an exact package of equipment or options. The most publicized "ZLX" is the one Kevin now has, and, it is very well documented as having been built with aluminum heads.

Similarly, all "Phase III" cars didn't have identical engine or body modifications, including stripes, hood, and side pipes.