that will probably work just fine. You can find Papst here
http://www.so-trickcomputers.com/Mer...tegory_Code=F1
They are only rated for about 60 cfm, but are damn near silent, and have a higher static pressure than a Panaflow L1A so they'll be better for a Heatercore. Though if you already have the regulator built, and are looking for good/top performance then a H1A is just what the doctor ordered