Is this the only option??????????
There are a few people that complain about these rears, but honestly, if they were having as many problems as it appears, none of these companies would still be in business. The only people you ever hear from on a board like this are the ones with problems.
At the very least, you'd need some heavy duty welding equipment, and some serious welding skills (I'd think on the order of marine welding for me to be comfortable). The dimensions you need need to be nearly right on from the torque arm mount to the shocks to the LCAs and spring perches. This is no trivial task...if you want it done in any short amount of time, you'll pay the price of admission and be done with it.
You can always order the housings separate and piece it together from there too...if you did that route, I'd get a Ford 9" housing from Moser or Strange, and find a nice, used center section from a NASCAR racing team or Ebay.


