Try
Durite Marine Guages for some that look ok in a 740 dash. No boost guage in the marine range, just in the normal motorsport range but they have white needles, not translucent orange. Also they are part vacuum/part boost and youŽll never get vacuum on a diesel (no throttle butterfly) so half of it would be wasted!
Thatś about as far as i can help with that list except like you i want to fit some driving lights in front of the grille and canŽt find any genuine brackets. Been looking at it today and i reckon the lights could bolt to the grille easily enough - not sure if they would vibrate though - iŽll let you know when iŽve done them!
On a slightly different note, obviously too soon to say for sure but would you be interested in selling some of the spares youŽll no longer need?
Also, before i offer it in the For Sale section, i have a new over axle exhaust pipe for a B200/230E - may fit the diesel too, yours for the cost of postage if itŽs any help?