Well, here's the current situation on my research. I haven't had time to get under the car and take measurements yet, since school and the in-law's car are both keeping me quite busy.
Perma-Cool has a 1" adapter that works with the M22x1.5 thread on our filters. It's shorter than the 1.75" Universal adapter that comes with their kits. It uses the Fram P/N PH8A filter (K&N HP-3001). Don't worry, I'm not about to put a Fram on there. The PH8A is MUCH longer than the FL-820 Motorcraft filter that is stock. No way that'll work. However, the PH16 (HP-2004) is the "short" version of that filter, and is about 1/2" shorter that FL-820. Meaning, as far as fitment goes, as long as I have 1/2" clearance under the current filter (not including removal clearance required for the filter) I could be OK.
I've shot an email over to K&N regarding comparisons of those filters to get the exact dimensions of them. I've got no reason to disbelieve Terry besides the fact that I am a stubborn engineer and want to convince myself before I give up on doing it without filter relocation. Probably won't happen until the next oil change in early August, so I can check removal clearance needed. If I decide that the fitment issues are OK, I'll get info on the bypass valve compatability and flow/pressure characteristics of the new filter (unless anyone has something for me here).
As far as cost goes, I can get everything from Summit (except a few parts are out of stock right now). Looks to be about $150 + shipping for everything I need. Not so bad I guess, considering I have to buy everything separate in order to get the 1" adapter.
Just figured I'd pass along what I've found so far.
