Bolts on the front headlight mount and radiator top mount brackets replaced with lightweight silver anodized aluminium items. 7075 aluminium is 60% lighter than mild steel and doesn't rust.
The bonnet latch bolts replaced with black anodized aluminium items.
Horn bracket mount bolts replaced with aluminium potassium bichromate items. Potassium bichromate coating is cheaper than anodizing but doesn't look as nice.
Radiator coolant overflow bottle mount bolts replaced with silver anodized aluminium items. Three bolts hold the bracket to the car's body but surprisingly only one bolt holds the bottle to the mounting bracket. There is a tab on the other end of the bottle and this tab slots into the hole on rectangle hole on the bracket.
Inlet manifold support bracket bolts replaced with aluminium potassium bichromate items. Likewise bolts holding the EGR plumbing.
Radiator coolant overflow bottle mount bolts replaced with silver anodized aluminium items. Three bolts hold the bracket to the car's body but surprisingly only one bolt holds the bottle to the mounting bracket. There is a tab on the other end of the bottle and this tab slots into the hole on rectangle hole on the bracket.
Inlet manifold support bracket bolts replaced with aluminium potassium bichromate items. Likewise bolts holding the EGR plumbing.
I've much more fasteners on the car scheduled to be replaced with lightweight aluminium and some titanium items when my budget allows. Watch the Dietary Supplements series.