Hi,
I have a kyosho TCD diff innards in a normal savage diff case (if I remember correctly) in the front of my savage. I installed it during my initial conversion at least a year ago. So far it is still holding up though i did not notice any advantage using it over the conventional diff. :o & I don't drive the truck that often.
Regards,
Joe Ling
PS : learnt about TCD in a savage diff here :
http://www.savage-central.com/module...=asc&start=120