Power windows were standard in the convertible, starting in the 1989 model year. They were not standard otherwise. The "custom equipment group" was an option, it was not standard.
I have seen "special ordered" or "deleted" in this thread but the truth is...
1) Your 'retail' order was not a "special order" unless you ordered something that was not a regular production option (RPO). If you ordered something that was not an RPO your order got a four-digit special order number. It was considered a "dealer special order" or "domestic special order" (DSO). That special order number would be on the door tag, DSO buck tag, and build sheet (w/ remarks/instructions below). No special order number = not a special order. Not ordering A/C, which was an option, was not a "special order". Ordering power locks but not power windows, which both were options, was not a "special order".
2) NOT ordering something was not "deleting" it. Air conditioner was an option, it was not standard (exc. 1984½ SVO), so not ordering it did not make it "A/C delete". Same goes for defrost, power locks, power windows, etc. If those items were optional, there was nothing to "delete". The only time something was "deleted" was if it was standard AND there was an option to delete it, e.g. 'radio credit option' (deleted standard radio) or 'stripe delete', or 'Competition Preparation package' (SVO -- deleted A/C, PL, PW, and downgraded [1984] or deleted [1985-85] radio), etc.