I saw that post too. I'm not sure how well the thermostat sandwich adaptor would fit on the Unique 427SC, at least with a 351W. There is so liitle room where the filter goes and the frame. You can have a real short filter (I believe Unique gives the part# in the assembly manual)and maybe there is also enough room for the thermostat sandwich adaptor. However, there is definately NOT enough room for a full size filter or a large performance filter such as the Motocraft FL-HP (even without the thermostat sandwich adaptor). Is there more room for the filter on a BB?