I am currently working on a "secret" project that may or may not involve a H12 engine. However, I want to incorporate a I6 piston setup for both sides to make it interesting. I was going to do a H8, with two I4s put together, but since I have the entire front of the car ripped apart i decided to go for a H12 setup. After ripping out 4 cylinders out of a different smaller technic kit, I know have the parts I need. Since this is Legos, I'm pretty much limited to a flat plane crank setup. And all of the pictures I could find online show a multi-dimensional setup, so if anyone has any ideas of what a flat plane crank I6 would look like that would be great.