I luckily picked up a pair of the Icon progressive rear springs from @OregonLC.
The icon springs are the same height, but come with a 10mm spacer.
here are a couple pics of the icons vs OME 2721.
View attachment 1732811 View attachment 1732812
I decided to run the Icon 10mm spacer and a pair of OME 10mm spacers to get the rear height where I wanted it.
I'm sitting at 24 3/4" from center of the wheel to the fender. almost dead even side to side, a hair lower on the passenger with the fridge and slide installed.
So far, the ride is great. very similar to the OME springs. The truck seems a little more plush, but I do have the rear sway bar off temporarily.
I'll be towing the boat home tomorrow. i'll update on how the springs do with a little more load (compared to the OMEs)