Site Sculptor uses a stripped down version of Power CMS 2 which is the version in Power CMS Builder.
In your order history, I see that you have purchased the design Suite in the past, this would qualify you for an upgrade to Design Extender for $39.99
The Design Extender upgrade includes an upgraded version of Site Sculptor and Power CMS Builder, the site Sculptor version in design Extender uses the full Power CMS Version of Power CMS Builder.
Design Extender offers the flexibility of adding Power CMS Using CMS Builder or creating a CMS Site using Site Sculptor that uses the same version.
contact our sales department by emailing firstname.lastname@example.org and they will be able to help you in purchasing the design Extender upgrade.