Yes. Just go to
http://bitcoinclassic.com and download either a binary (which you can unpack and simply run) or if you prefer you can download the source and compile it yourself.
Bitcoin Classic is a drop in replacement for Core. Just run it with the same configuration file and the same command line arguments and it will use the same data (no need to redownloaded the block chain).
Good luck and thanks for being part of the solution. Let us know if you run into any roadblocks.