Is there anyone out there that is familiar with transfercase adapter that could tell me what this fits?, let me know if you can if these pics go through new to this, It came off a dana 20 and looks like it would go on the back of some transmission, the people i got the case from with this adapter installed were building a datsun pickup with it, there are no numbers on the aluminum housing but does say patent pending, it has lke 23 spline input, it looks like it would go on the back of a 2wd auto or 2wd 4spd and has a couple of set screws to me that looks like is what wouuld hold it on, thanks 
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