I like the bullbar.
The old FH12 used to have one big exhaust on the drivers side.
I´d go with Chris ideas. A couple of spotties on the bullbar is more than enough.
Even the new models still got a box for the battery on the back behind the cab. Might be another little extra.
If you get rid of the side skirts you should shorten the frame that is waaaaay to long for a prime mover
Low roof might be another option.