I replaced my K&N knock-off with an STP paper, cylindrical air filter specced for '91 (I think) Prelude. The filter doesn't have a rubber fitting to attach to the pipe, but the Autozone I bought it at carried an adapter that let the new filter attach to the intake pipe. When I get home later today, I'll post the post the product number. It may not work for your applications, but it might help somebody else...