Hi Mandy, do yourself a favour and buy a complete car. Avoid other people's "unfinished projects"
By the time you find a suitable engine, rebuilding, scouting parts etc, you can easily blow thousands of $$$. That money can be spent on a fairly decent runner.
If you are new to the classic car game, just be patient and with that the right little car will come along.
Cheers and good luck with your 500 affair.