Hey guys, I installed the RPG collars myself on my Gen 3. I think the RPG video is a little optimistic on the time. It took me about 4 hours or so to do mine. I fought the spring and spring compressors positions on the drivers side and when I moved over to the passenger side I could not get the compressors in with everything assembled. I tried doing it with only one spring compressor but it would not compress the spring enough. I ended up disconnecting the upper a-arm and tie rod and axle and pulling the assembly out of the way and then I was able to get both the spring compressors in there. So depending how the shop is doing it it may take more time.
Kevin