Unfortunately there's no way to truly tell for sure as GM didn't keep such records, but rest assured it was a fairly rare option.
If its a Z28 the difference is a nonvented opti spark VS a vented optispark of course this doesnt include the countless number of option combinations like TTops, power windows/locks A/C stuff like that.... if its a V6 the 94-95s are 3.4L but in late 95 they swapped over to 3.8L 95 3.8L are rare
Not all 1984 Chevrolet Camaro Z28 models came with T-tops. While T-tops were a popular option for the Z28 during that era, they were not standard equipment on every vehicle. Buyers could choose to order the Z28 with or without T-tops, so it ultimately depended on individual preferences at the time of purchase.