if you knew where it came from why did you ask
That's the thing.. IF I knew where it came from I wouldn't have asked.. I just know what it seems like it DIDN'T come off of. I would figure if it came off an 83' like you said.. then the 83' rear flange I bought should fit. I suppose I could be wrong but i'd suspect that the front and rear bolt pattern would be the same.. possibly not?
All I know is if I pull a rear output flange off an 83' , 85' , or 92' its not going to bolt up to the driverline sooooooo... gotta find out where this flange came off of so I can get another