(Update) Build Sheet Found....kinda (Fender Tag also)

It would have come from the factory with a 904, the tire code is for D70-14 whitewalls, I can't tell if it's a B or an 8 under the (S)tripe code. If it's an 8, it's a stripe delete, the E8 could be one of 2 different packages available that year. The ones I see listed are the Performance Axle Package (358) and the Spring Package (368), You'd probably have to have the correct build sheet to know which one for sure. I can't tell if there is a 6 under the "a" or not. If so, the car should have a console.