I've always used 'high racks' rather than low riders. I've made mine out of standard well built rear racks and customized the necessary framing to fit the specific bike I needed one on. (I have a home work shop)
Having said that though, "rifraf" has given you some great options that are already built and you should be able to select one that will fit your bike. Just make sure that whichever one you select will allow your panniers to hang without interfering with your brake assembly, and will give enough room for your shoes and pedal stroke while turning.