I had Ramflo 400 filters on my 2T-G in TA22. Was concerned that the foam insert seal to the backing plate wouldn't be too good. Would prefer the K&N/Unifilter style filter for carb-mounted system.
Recently sold the Ramflo filters in favour of a new plenum/filter design incorporating an enclosed air box (with short ram tubes inside) fed by an air filter positioned in the front corner of the engine bay. This is still 'under construction' so no pics yet.