A) spend the 30k on an Aston Martin, tvr, rs4 etc
spend a big wedge of the 30k on a car and the rest on a new garage to house your new car
C) spend 13k on a project 10k on tools and garage equipment and have a few other cheap cars to play with
I guess it's a bit bias in here as most of us will modify a car rather than buy an off the shelf car!