I'm in the process of converting my air cleaner from aftermarket to the F engine style air cleaner on my F.5 engine. I guess one improvement of the 2F air cleaner is space saving in the engine bay, but I was wondering if there's any real/theoretical improvement in the 2F air cleaner's performance. I couldn't find anything in the search so I thought I'd bring up some discussion if there is any? I upgraded to a 2F valve cover so it would probably fit, but the F style seems to hold a bigger filter (bigger=better?) and I'm not really short of space in the engine bay either. Curious to see what y'all think.