The hard brake lines are still available from Toyota I believe, I kept the backing plates on my 40, no problems in 10 plus years.
X2, hardlines are still avail, we stock them @ Cruiser Outfitters. If your backing plates are in good shape, run them!
If not, we have backing plate eliminator kits that still use the hardline as it's preferred over a complete soft line from axle to caliper.