I have a Mazda3 2004. I went to the mechanic today, they said I need to replace transmission mount and right front side engine mounts. They recommend using Dorman engine mounts. Does anyone know where to get these? I tried going to Dorman directly. Unfortunately, they no longer sell this...

I've searched here and on Google in general; can't find a confirmation. Found these threads about TPMS but no answer to my specific question: http://mazda3revolution.com/forums/2010-2013-mazda-3-skyactiv-wheels-tires/14085-tpms-compatibility-questions-will-these-work.html...