Managed Pipeline Mode

this is my first request to have the pipeline mode as classic with v4.0 of .net clr
I normally use this below dsc to get the site running. would I need to modify a module to define my options and then add a line to the dsc get the option of “managed pipeline mode”?

            ShortName           = 'sitename'
            DNSSuffix           = ''
            SiteAuthors         = ("admin")
            State               = 'Started'
            RuntimeVersion      = 'v4.0'
            Enable32Bit         = 'Enabled'
            Nodes               = ('dev-A1', 'dev-A2')
            IISAnonymousAuth    = 'Disabled'
            IISAnonymousUser    = ''
            IISWindowsAuth      = 'Enabled'
            Applications        = @()
            VirtualDirectories  = @()

The current Website resource doesn’t support that.

how do you know what the modules support?
not just for this but other features

easiest way is to run get-dscresource and expand the properties property.

get-dscresource Website | % properties

Also many of the microsoft resources are out on github now, and the readme for the project has a little more info about the resources and properties available to them.