Need Help Identifying Rims

I've been trying to identify these rims and have not been able to match up the numbers yet. The inside of rim is stamped with:
50991 14X6JJ MW-1 MADE IN USA DOT-T 1395 LBS MAX 35 PSI 07 22 92 0B DCI LINE 1
In other areas of the rim the following is stamped:
14 8 TCD 642

I would greatly appreciate any info anyone could give me.

Pic~~~ http://img40.exs.cx/img40/9900/image0143fm.jpg

Thanks

they look like the wheels off an 80's Chevy S10/S15