Yeah, seen that kit. I would suspect their would still be some rake.
Figured using the oem front 2" lift struts would accomplish same thing as the RC 2" leveling strut kit. For less money and use oem parts.
https://www.roughcountry.com/gm-leveling-struts-500065.html?find=2020-gmc-sierra-1500-2wd-481244