I finished the 2 pack. I spend a lot of time on adding bolts and nuts on the different parts or painted them if the were part of the mold.
I also upgraded the 2 alternators with 3 cables and repainted it in aluminum. The cooling blades were painted gray to simulate that type of sheet metal they would have used. The fuel pump got the missing hook ups in the back according to pictures I found on the internet. I noticed, they were to indentations in the mold at that spot and I believe this hook up part was planed originally and never made it to the production line.
I used Tamiya Panel Line for the cylinders to give them a little bit more depth. I did not want to spent to much time on them, since they will not be really visible at the end.
The most time I spent on the fuel pump. I added a lot of screws, nuts and bolts and repainted every piece (except the yellow plates) to match my pictures I found on the internet. On the cover plate, the bolts were missing although the prototypical indentations where provided. The 2 Bosch plates where copied from an original fuel pump that I found on a sellers website. They are too small to read but I know they are there.
The muffler holder plate was updated with nuts and bolts and got a Tamiya Panel Line treatment.