65 wildcat

need some help with a wildcat should i or should not restore it how hard is it to get parts and what is the value it has a 425 big block red w/black interior kind of rough shape with the rust

I have no idea about the availability of parts. I do know that the 65 wild cat was a nice car. My father owned one, and it was my favorite of all the cars he owned.
I would look at some web sites for buick clubs, such as
http://www.buicks.net/
or the Buick Club of America. Also check out some junkyards online. There are some web sites that allow you to order used parts from junk yards around the country. As far as value when finished, depends upon how good of a job you do, but I saw a couple of wildcats with asking prices of 7K and 11K.

Shrocat is right.
Also, the 425 was an option, which might bump the value of your car just a bit. Most Wildcats came with the standard 401.