So glad you shared your design. I remembered seeing it but couldn’t find it anywhere. That’s what prompted me to go down the “what if” path on a spindle. I want to add ABS, a hub spindle, and better brake options. I recently found Michigan Metalworks who builds beefy spindles for full size trucks and that got me going further.
I was tooling today and found a dual bolt pattern C7 hub, and that paired with a set of readily available GM calipers can be a great option, just need to firm up a rotor.
my thought is to grab a C5 spindle and hub off eBay, get the measurements for the caliper ears and hub mounting, combine that with FMJ pick up points and go. But if going to all that work, it makes sense to go all in and determine what the optimal points are at X ride height for the UBJ and LBJ. If, collectively as a group, we could do that, we could possibly come up with a great solution, or at least know what it would take to get these really dialed in.
A link to Michigan Metalworks website and their fabricated spindle.
Custom Fabricated Spindles