The engine block was painted with XF-16 flat aluminum and then I hand painted the flat block on the block but that is not visible. The upper intake and accessories were painted with model master aluminum metalizer non buffing. The gunmetal detail took quite some time to mask and get right. That was done with MM gunmetal metalizer as well. The details were picked out with strictly Vallejo paints.
I made two ignition wires from detail master and thin dia wire from hobby lobby. I used small k&s tubing to coil the wire around and serve as a crude ignition. I think it is fairly convincing.
Here's how the engine bay stands today 6/17
I painted the fan shroud and added hose clamps via bmf. That sucker is a pain to mask and detail. I also added battery cables. This was done by drilling a hole in the back of the positive side and simply running thin plastic tubing into it. For the other side I had to modify the terminal by tapping into it and adding a thinner plastic tubing. This way I could snug a PE cable piece securely. I also repainted the battery and I'm very happy with how it turned out. The engine bay is 99% complete. I'm just going to add some vaccum lines to top it off.