I just finished my kit. I have a hybrid kit. My truck had 1 1/2" rake from the factory, not much. So I went up 2.5"/2"
I used Cognito's new UCA that doesn't require the frame bumpstop to be cut, and the Readylift kit, but with 2020 Fox 2.0 shocks all around. I have the kit set at 2.5".
I have about 1" rake front to back, which is what I wanted. I have about 1 1/4" to 1 1/2" gap between the UCA and the frame stop. I did use the diff drop spacer, but did not need to use the skid plate spacers. The CV axles are decent, obviously steeper than stock.
I am happy with the way it turned out. Ride is good, maybe a touch stiffer than stock. Alignment was surprisingly nearly dead on, except the toe needed to be adjusted.
I thought about the 4" Cognito kit, but there is so much cutting and drilling involved, I did not want to go down that path.
My biggest issue is trying to find a wheel and tire combo that I want to go with. I can't decide on offset. The 20s I like only come in a 0 offset. The 18s only come in a +18. But I don't know ??