ok 1994 do they come all with stock posi units if not how to find out with out driving it

 

I would think that most formulas got posi, but if you want to be sure, just check the service parts identification sticker. It's usually in the dash glovebox on 4th gen birds, or the console glovebox. Look for the code "G80". That's the code for positraction. The other G code tells you the ratio (ex. GU2=2.73, GU5=3.23, GU6=3.42, etc.).