I'm surprised nobody has responded to this....I looked at the CRE 4000 & watched the video for the install. It appears that a slight lift happens as the Moryde is installed. However, since the hanger end of the spring is not moved the rise should be nominal, my guess would be less than an inch. Make sure to add the cross mounting bracket and this should work well.
2017 F350 Dually 6.7
He who dies with the most tools, wins!