Copying this from clubgp since I got 150 views and no replies yet...
BTW.... IT'S ALIVE! (will post a separate thread later with a couple pics)
I am trying to get an L67 up and running with the F40 6 speed. Anyone who researched this swap should realize the oil filter adapter and passenger side CV / intermediate shaft interfere with each other.
Ebay currently has this adapter, listed as a 2002 Grand Prix GM # 12563771

My search for 12563771 has turned up useless. Was this adapter used on any other vehicles? The guy jacked shipping up to $23 which I find a bit steep for such a part...
I currently have a remote oil filter twist-on plate with the stock adapter (that has the filter vertical next to the crank, above the frame / engine cradle). I have some clearance, but since I can't weld aluminum, I can't take the grinder much further.
I'm not quite comfortable with the clearance I have now, and if I'm looking at that "2002 GP" adapter correctly, it'll move straight down and angle towards the oil pan. If that's the case, I'll have all the room in the world for my remote filter... or ditch the remote and twist on a stock filter.
The only similar option I've seen I also cannot find:

"This adapter can be found on 85-87 N-body (Grand Am) cars on the 3.0L 90 degree V6 engine." from
http://www.gmtuners.com/swap/3800.htm[This message has been edited by zi_gravedigger (edited 05-18-2012).]