I'm pretty sure mine are not HD 60's after seeing those pics. As I stated before, the 69 housing has a couple extra gussets on the case near the pinion where the 75 housing does not. I will take a couple pics when I get over to my Dads place where they are currently setting. (To heavy to justify moving if I don't need them quite yet) Interesting info though. Sorry to post jack. My apoligies.