Here's the 1/32nd scale Spit MkIX, converted from the Hasegawa MkVb kit around 25 years ago.
The entire nose, carb intake, small blisters, exhausts, cannon fairings and (out of view) the side profile of the 'extra' radiator were moulded in situ using 'Milliput'. The prop was made by casting an extra blade in resin, and combining this with the three blades from the kit to make a four-blade prop, with the 'redundant' slot from the three-blade prop filled with 'Milliput' and sanded smooth.