Part's are still available. You can't beat an old Gravely, overbuilt and reliable.

Agree with yt125. Be advised that these are not "safety conscious" and will run over you if given half a chance. They are also a brute to operate on other than flat, level ground. Don't get me wrong, I had a '62 which I only recently gave away as I'm approaching 70 and couldn't muscle it anymore. They're unbelievably sturdy when compared to todays products. They have a very low ground clearance and love to hang up on a hump leaving you tugging and straining at a very heavy chunk of "old iron." The "brush mower" is their regular rotary with a half or three quarter inch blade, rather than the (I think) three eights inch "finish" blade. There are tons of attachments still out there, but, again, no safety interlocks, etc.

I'm finally going to look at this thing tomorrow. From my research I see that it calls for a 3/8" thick blade to cut brush, and the owner isn't sure if that's the one on there or not. I have looked online and tried to find this blade if I need it, and I don't see it for sale anywhere. Any ideas?

This guy is good and also has, or had a ton of used parts, for something like that, I'd go used.

http://www.gravelyparts.com/