I just got some Racor heads off eBay, mounted them up and plumbed them in:

http://stuff.is-a-geek.net/PhotoAlbu...cs/CTD_223.jpg
http://stuff.is-a-geek.net/PhotoAlbu...cs/CTD_226.jpg

I don't remember, but I know I didn't spend more than $20-30 apiece on them. The filters are alot more expensive, but they are much higher quality and last literally years between changes. The one the 2nd pic was in service almost 3 years and still showing no pressure drop when I changed it.