And here are the parts mocked up on a savvy bulkhead :
The lower arms are a direct fit, no nothing needed to get them in. And you can use the stock lower inner cen hingepins too, they are captured via a nylock nut. Very nice indeed. You do have to flip the arm over to install it (compared to how it is mounted in the gst), but the arms are not handed like the savage so it does not matter.
The cen uper arms cannot be used, IMO. They are too big and the mount spacing is too wide to attach to the savvy bulk without extreme mods. So that leaves us with the adjustable savvy upper arms. You cannot used the fixed length arms as they are a bit too long and will produce positive camber when the truck is at ride height. I am also thinking the adjustable arms will need to be trimmed slightly to allow the turnbuckle to thread in a bit more to both pieces. Some washers/shims will have to be used to space the smaller savvy ball end in the cen hub. I tried to fit the cen ball end in the savvy arm but it is too big. The cen hub upper arm holes will have to be slightly enlarged to take the correct sized bolt, nothing major there.
Here is the fun part...
The cen cvds do not work with the savvy output cups. I am referrring to the X cups, not the shd cups. The shd cups would be way too big for the ball end of the cen cvd, and would bind.
The X cups are also slightly too big too, the ball of the cen cvd is slack in the X cup.
So I took a look at the lst diff output cups, as I will have to use those with the lst cvd/hub mod (see other thread in this section).
The cen cvd fits perfectly in the lst cup. I then tried to fit the lst cup in the X diff. It fits, but is a bit tight. Some measuring showed that the pin hole in the lst cup is about .5mm closer to the flat area of the cup compared to the X cup. The fit in the diff is tight. I would say that a small amount of filing on the ring gear where the output cup touches and on the same area on the diff cup wll cure this. The inner pin size is the same, and the spider gears fit fine too.
Another requirement to use the lst cup is that it allows the cen cvd to get closer to the diff. The lst cup is shorter and the slots are cut deeper. This is mandatory as the cen cvd will bottom out in the X cup as the arms is raised to level.
