Slotege - so let me get this straight if you don't mind.
Your KL came from a PGT, correct? Your AC compressor has N48 stamped on it, correct? OBD1 or 2? And lastly - your P5 AC lines (hi/lo pressure) directly bolted up to the compressor? There was no modifications necessary? The reason being that a few of us out here haven't had that story be true for us at all....
I'm driving a KL swapped P5 as we speak, and my compressor says N25 stamped on the bottom. The P5 lines look just about right - but they are just too large on the fitting side (the actual plunger with the o-ring that goes into the fitting on the AC compressor). The P5 has a larger diameter piece than the KL allows.
If we can get a general consensus going here - we could all win. But as of now - A few of us guys aren't doing well with this, and the heat is fixing to turn up here in TX....I gotta get this AC fixed!