Hey guys, I just installed the Cat filter adapter, but decided to go for the full monty. I threw on a 1R-0749 instead of the 0750. This baby is twice the size of the one that comes with the kit. It's about 4 inches longer, and the canister is a slightly larger diameter, but the threads and gasket diameter are identical. I'm going to keep the 0750 under the seat as a spare.
To fit I had to remove the bracket that holds a large wiring conduit to the intake elbow. There are two 10mm bolts holding it down, and once they are removed the conduit pushes toward the front of the vehicle. I took the whole filter head off to do this, and after installing the filter to the head, lowered it all down into the engine bay. The bottom end of the filter touches the conduit, but it's nothing a zip tie won't fix. And there's still room to remove the filter from below the vehicle, should I need to change it. I expect it should last 50,000 miles.
I also recommend using a bench vice, and cleaning the old loctite out of the threads. One thing I haven't seen emphasized is cleanliness. Clean your workbench and wear clean rubber gloves. Clean the allen wrench you use to install the new nipple into the head. Blow out the assembly with compressed air after you get the nipple in. The clean side is the bent fuel elbow - towards the driver's side as installed. Don't let anything fall into the rubber hose when it's disconnected from the filter head. When you've got the nipple assembled and are ready to reinstall the head, blow compressed air into this elbow to clear out any lint or loctite fragments from the center of the nipple. This will greatly reduce the chance of clogging an injector.
It actually didn't take much priming to get fuel pressure, and she started right up. I haven't taken it out on the road yet, but I'm going to do so and check for leaks.