8.25 ID?

[TrailBeast]

I looked all over the place and can't find a resource for determining an 8.25 housing year and type by the stampings on the case.
No tag with it, but it has 27 splines and a 3.55 gear set.
The spring perches are currently on top of the axles and have a 5/8 locating pin hole, so I'm guessing it came out of a truck or van.
Does anyone have a resource for finding out by these numbers?

Thanks

 

[MoparLeo]

Those are casting numbers, not stampings. Time and shift codes. What info do you need ?
Casting Numbers: Mopar Rear Axle Dimensions
Mopar Rear Ends / Differentials / Etc

 

[TrailBeast]

Those are casting numbers, not stampings. Time and shift codes. What info do you need ?
Casting Numbers: Mopar Rear Axle Dimensions
Mopar Rear Ends / Differentials / Etc

Hey thanks,
Yep casting numbers, sorry.
I have seen both of those sites already, but was hoping something would tell me what year this thing was made.
Doesn't really matter when it comes right down to it, because I already know which range of gears this one can take and it already has the gears I wanted anyway.
I'm going to cut it down to the Dart length and make a disc brake unit out of it.