that is Rock products their is some write up about them on yota tech i think its the same company enginbuilder uses. I think im gonna give them a shot on my gasket kit on my 22r if that helps. but no i havent used them
dnj is good stuff!
i did the full gasket kit on my 22re with the rock auto DNJ gasket set and they even had a .02+ size head gasket!! never have any issues