Don't know yet, going to try and remove them today to take a look.
I will only replace ignition components with OEM.
The coil packs are OEM, I noticed coil5 has already been replaced by the previous owner as it has a newer part number.
The previous mechanic that worked on the car also spilled a lot of oil on the second bank. I found a lot of thick oil inside the electrical connections to the coils, have started cleaning that out too.