Why sell? Just put the project on hold. You will regret getting rid of it later. The amount of money you get for an unfinished car is going to be alot less than you hope for. Save money elsewhere if you need to.

Having a baby isn't cheap, but it does not have to be outragously expensive either. Just keep the purchases down to the necessities and hit the garage sales. You can find tons of high quality baby stuff cheap that way. Babies are not in the clothes long enough to wear them out, highchairs, car seats, toys, etc. are very durable and easy to clean up.

Just my $0.02

Plus, you will really want to have somewhere to go and tinker with something you like every once and a while. Trust me on that one.