Are you racing your car or is it just a driver? Did you notice or hear any problem from it or did you just want it inspected? As if just a driver and no noticeable issues and unless you are planning a coast to coast run, I would just run it as it is. If you did notice a problem, I would just go with a good used.
By the way, I checked out the picture you have posted and just curious why you have your 327 Emblem up-side-down?
-Parting Out over 75 '58 to '73 Full Size Chevy Cars-
-National Impala Association
-Vintage Chevrolet Club of America