2006-2007 DB9 Coil Pack Survey

[Zuman]

Everyone with a DB9 will need to replace their coil packs sooner or later. My '06 has just reached 48,000 miles, and the stumble at idle while in "D" is a strong indication that it's time for mine. Many need the job done sooner, but mine is fairly typical.
There are two types of coils used in DB9s: two-pin and three-pin. It appears that the changeover MOSTLY occurred for MY 2007 cars, but there are many inconsistencies.
I emailed Aston Martin tech info, and "Viktor" replied that "up to 2007 the 2-pin coils were used." That may be the most common situation, but there are many outliers such as YVR's three-pin coils in a February '06 car.
I've noticed in the AMOC registry that DB9 engines were not all installed sequentially, and that some earlier chassis ended up with higher serial number engines and vice versa.
The bad news, of course, is that you can't tell which coil you have without significant disassembly.
IF YOU HAVE A 2006 OR 2007 DB9 and have replaced the coils, please reply with your engine number and the number of pins on your coils. I'm guessing that the engine number might reveal the pattern (of course, that may also be too rational for Aston Martin!). We might be able to help other owners who are about to face the replacement challenge...