I bought a 2003 Silverado and decided to buy a Detroit TruTrac for it because I was having serious traction problems at the track. I did 18 sec in the 1/4 spinning the whole way, lol. DR's helped a lot(13.9 1/4) but still some wheel spin so I can't hammer it.

Any ways, I went online and ordered a DTT for the Chevy 8.5/8.6 10 bolt assuming that is what I had since they come standard on the Silverado. Problem is my truck is a foreign(Mexico) model so it has a different rear end(Latin rear ohh great now I am thinking Vida Guerra). The shop that was going to install the DTT told me that I did not have a 10 bolt but a Dana. They were not sure exactly which one only that it was smaller than the 60. I ended up selling the DTT to a member on PT.

I looked online and it looks like a Dana 44. I went to another shop and they said it looked like a Dana Super 44 and in order to get a Posi in there I would need a c-clip eliminator and a bunch of other stuff. It would cost about $1600-1800.

Can anyone here tell me what rear end I have? And if I can get some sort of Posi in it?

Here are some pics.