Sorry I've been MIA. Quitting my job and focusing on projects and tasks for the next adventure have been distracting me from the internet. Heck I'm likely to disappear for months at a time here soon.
If you haven't already picked it up that is a good deal. Keep an ear out for groaning from either of the bearings. They become fairly obvious when they're bad. The backing plates I'm guessing are the splash shields. They're not necessary.
From what I remember on my brake line size research is it has to do with the year of the truck. Comparing my '98 Isuzu to my 2000, my 2000 had the larger lines just like my 2000 Blazer. The issue I was having is that the brake hoses I ordered for the 2000 Blazer brakes would not screw onto the '98 Isuzu hard lines. The hose for the newer truck had too large of a fitting, so if you are keeping the line size as is order for the year of your truck.
I'm not sure how much better I can describe with words the difference between the two. Honestly if you pick up the brackets for the Blazer and hold them up to where they would be installed on the S10, the difference will be very obvious. The S10 lines come off the frame and point toward the front of the truck. They are completely horizontal. The Blazer lines follow the same path until they extend outside the frame and then take a 90* angle downward to mate up with the bracket.
The bender you linked on Amazon is practically the same bender I used to modify my lines. The fitting might be in the way some, but I was able to make it work even with that.
This is a picture of how my 1998 Hombre was modified to work with the Blazer bracket on the driver side of the truck. It was originally straight and pointing forward where the 90* bend is now made.
I've done the Blazer brake hoses 3 ways now. My memory isn't perfect on the Hombres as while I was swapping the brakes between the two trucks after the initial swap on the 1998 I was having to piece together working brake lines for both trucks.
On my 1991 S10 - smaller hardline, S10 hose: kept everything stock to the S10 and looped the hose to
work. It rests on the caliper, which isn't ideal, but I haven't worn either of the hoses out yet. I don't suggest it, but it
has worked.
On my 1998 Hombre - smaller hardline, 1 of each hose: bent down to match the Blazer brake line bracket. The one side I broke bending it, so I reflared with the correct fitting to match the Blazer. The other side I used the S10 hose. I don't remember how well that worked, but I wasn't entirely comfortable with it. Before I had any issues I swapped the setup to the 2000 Hombre.
On my 2000 Hombre - larger hardline, Blazer hose: I believe I bent both of the hardlines down to match. I used Blazer hoses on both sides, so no clearance or rubbing issues.