'm going to be installing an 121 xtra-10 in my 95 Indy Trail donated from a 99 xc 500. I need major help on where in the tunnel to mount it. It's currently got an xc-100. All I think I need is the dimension from center of the drive shaft to the center of the front mounting hole, the distance down from up inside the tunnel to the front/rear holes and finaly the distance between the front and rear holes. It would greatly help me out if someone could measure up their sled for me. I've been getting confilcting info from people and also it seems that it may matter what chassis the info comes from. From what I've been told I have an Evolved chassis but they put them in GenI and GenII as well so I'm not sure if the tunnel changed and if it will affect me. Any help would be appreciated!