You will deviate from that original shape a bit, but see how you like it. Remember that these are cast iron shapes, with maybe some of the shapes welded on. That is a different look than the thin, pressed metal plates that form the outside of a car. And Shrinkwrap might ruin that effect.
Also using the Shrinkwrap Modifier with Vertex Groups or even Vertex Weights is very dangerous. I used it on my ‘ Bee-hicle’ project, but it was a frustrating experience of applying the Shrinkwrap and re-adding one, several times. Don’t get me wrong: it can be done, but like all magic: it comes with a cost…
