I've got over 30 requested and I have just accepted the first 10 orders. I will be producing lots of theses but until everything is running smoothly I will not be accepting money from anyone but the first 10. Please be patient and I will get back to you. In the meantime, here is a measurement guide. 5.5" is for Datsun L motors but if you have other applications they can be cut to size. https://www.facebook.com/MAVDFAB9/photos/a.1290236847672127.1073741828.1289060267789785/1290236831005462/?type=3