I am not sure where you got the information that the CM filters are 8" tall. The site I visit indicates a 6" and a 4". Both have more than enough filteration capacity to handle a 4 banger with a cooler, turbo and anything else you want to send oil too.

I called and spoke to a rep there explained my application and the 4" was way more than needed. My app is a B18C1 turbo. When I looked at the cost of $65.00 at a 8 micro filtration I see value. Same goes with the fuel set up. you could even buy a 1 micron filter element..... thats insane....... 39 millionths of an inch. no particals passing here. 8 microns or .0003 inches is very small for a fuel or oil filter. We also talked about break in and he said do not use these filters on a brand new engine. use a stock filter and upon break in switch over. Without a by pass it could turn into an issue.