In case anyone is interested,
RockAuto sells a Corteco valve cover set with grommets for $58.79 + s/h. I've been ordering stuff from them and the Corteco stuff is high quality and fits perfectly.
If your grommets are hard as rock as mine were it's almost $40 + s/h to get them from Subaruparts.com. Add the cost of the other gaskets and the Corteco set is way cheaper.