1992 300 Series

Hey,
This is my first post on this forum. I am looking at possibly purchasing a 92 300 Series for about 4k. I currently own a 76 Corvette that I blew an engine in about a month ago. I dumped about 3k into the engine only to have the exact same thing happen about 5 miles after I got it in there. So now I am just looking for a reliable but clean looking ride. By searching this forum I can tell that reliability has been beat like a dead horse, but I couldnt find any threads that specifically answered my questions. Am I looking at dumping alot of money in this to keep it running? If that is the case I will go get a Civic or something. Is 4k a good price for it? It is a 2.6 liter, 4 door, 140,000 miles, two tone gray and white. Body is in great condition. Any advice comments or suggestions would be appreciated.
Karl