mechanical tensioner parts...identification needed

[speedo]

I got a box of parts when I purchased a motor and when I pulled them all out it appears that they are all mechanical tensioner related. I have four mechanical tensioner housings, two bags of springs that look as though they are tensioner springs, two bags of threaded brass inserts that fit inside the tensioner housingsand sit at the bottoms, and two bags of what appear to be the steel retainers that cap the top of the tensioners off...to be held in place by snap rings. Here are some pics...




I am selling the tensioners in the classifieds, but wondered if anyone can help me ID the rest of the bags of parts...thanks

Speedo

[speedo]

Was this someones tensioner modification project from years ago/

[speedo]

Nobody ?