There is no drop in K&N filter for the D. You need to flip a filter upside down and use some special clips to hold it in place so you don't get air leaks (leaks mean dirt in your engine). Marty Maier has been making clips for this. The page below has details and gives the part number for the filter to use: http://www.midstatedmc.com/parts/k-n.html I've been running this setup for a couple of years and it works great! Mark Noeltner Webmaster: Mid-State DeLorean Club VIN 6820 At 08:22 PM 5/15/2003 -0000, you wrote: >I searched and searched for a part# for the K&N air filter and have >not come up with anything. I had a number listed that started with >NM33 but my autoparts dealer did not show it in the books. >Any suggestions or part# that makes more sense for me to use?? > >