Maybe, im not so good with serial number dating on Class Axe stuff. Thats mostly because they really didnt have any method of recording or giving serial numbers for the import instruments during that time. They literally just picked a plate out of a box and bolted it on.
The only other thing I can tell you for sure is that yours has the less common (not saying rare) control layout. I used to have a 89 Plat ST and it had just 3 knobs no toggle. I dont know the difference in wiring but I can assume it is slightly different in some way.
I do happen to think the headstock looks good on the ST basses as well.
Heres a picture of mine when I had it