I added the SKU field below the price on the 'advanced image viewer' xml template using the code from the 'variants in right sidebar'
<xsl:value-of select="aspdnsf:StringResource('showproduct.aspx.21', $LocaleSetting)" disable-output-escaping="yes" />
<xsl:value-of select="concat($pSKU, skusuffix)" />
That display package I would like to use has a dropdown to select variants and when you select one it updates the price. I would like it to update the SKU suffix from the variant as well.