http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=perf&Number=659602&Forum=perf&Words=heatshield&Match=Entire%20Phrase&Searchpage=5&Limit=25&Old=allposts&Main=656168&Search=true#Post659602

would the heat sheild pictures shown on this page be ok to do, a box with the top open, or do i want more of the filter exposed? so basically im asking if the pictures in this are too much of a sheild