I did this a while ago and thought I'd share. The service manual has a neat cutaway illustration of the 5th gen engine. I scanned the page and then used Inkscape to run a conversion to generate a scalable vector file (the attached .zip). I've also uploaded two high resolution .PNG files if you just want to set a wallpaper or further colorize. At some point I'll have it silk-screened to a t-shirt, not for bulk sale mind you, just personal.