I have an interesting update...
Today, the Carli rear HD springs arrived along with the Method 317 wheels and Bilstein 6112's. UPS man I bet was hating me today having to unload all that
The interesting thing I've found out is that the Carli HD spring measures 21-1/2" in static height. From what others have posted on here, the stock 2019 and up Rebel rear spring measures 20-1/2" in static height. Finding this completely contradicts the information Carli sent to me in my email correspondence with them. By that extra inch in length, I will achieve exactly the amount of rear lift I was looking for!
Now I can't wait to get everything installed. That is still going to take a little bit of time, but I'm close...