Not directly through the admin section, no. However the googlebase feed is entirely contained within an xmlpackage, so to send additional information all you have to do is edit that package to send. For example, so get the proper manufacturer, just add the manufacturer name to the query at the top of the package (new code red)
Code:
select p.productid, m.name as Manufacturer, p.name, isnull(pv.name, '') VariantName, p.description, p.sename, p.ImageFileNameOverride, p.SKU, isnull(p.FroogleDescription, '') ProductFroogleDescription, p.SEKeywords,
p.ManufacturerPartNumber, pv.price, isnull(pv.saleprice, 0) saleprice, isnull(pv.FroogleDescription, '') VariantFroogleDescription, isnull(pv.description, '') VariantDescr,
ROW_NUMBER() OVER (ORDER BY p.productid) AS ROW
from dbo.product p
join dbo.productvariant pv on p.productid = pv.productid
left join dbo.productmanufacturer pm on pm.productid = p.productid
left join dbo.manufacturer on m.manufacturerid = pm.manufacturerid
left join (select variantid, sum(quan) inventory from dbo.inventory group by variantid) i on pv.variantid = i.variantid
where p.IsSystem=0
and p.deleted = 0
Then add a parameter to the list of parameters in the Product template in the xmlpackage (again, new code in red)
Code:
<xsl:param name="ItemImage" select="aspdnsf:ProductImageUrl(productid, ImageFileNameOverride, SKU, 'medium', 1)"></xsl:param>
<xsl:param name="ManufacturerPartNumber" select="aspdnsf:GetMLValue(ManufacturerPartNumber)"></xsl:param>
<xsl:param name="ProductManufacturer" select="aspdnsf:GetMLValue(Manufacturer)"></xsl:param>
then add the node to the end of the item node
Code:
<g:mpn>
<xsl:value-of select="$ManufacturerPartNumber" />
</g:mpn>
<g:manufacturer>
<xsl:value-of select="Manufacturer"
</g:manufacturer>