Weddle Engineering.
Two year warranty, unlimited miles, cost $895/$400 core.
I had a problem with a locking diff that I had them add, they applied the
cost of the locker to a four spider German heavy duty diff and did not charge
me the labor to fix it.
I started looking for a taller .091 fourth gear and ended up with a new five
speed gearbox.
Talk to Chris. They stand behind their work.
Just a happy customer.
Robert