The rear dana 70 has no shock mounts, and the front dana 70 has shock mounts on the front of the axle, right where my cross over steering goes. Can I just buy some some where or do I need to make some? The axle tubes on these things are huge. I have not measured to make sure, but I think they are 4" diameter. I have some hardened steel from a garage door hinge. Can I use that? Will hardened steel weld to the tubes?