Paul, If the owner is going to replace the plug, and the motor runs, be sure and get it good and warmed up before you decide that the motor's good! Watch for white smoke, since it froze, look the motor over really well while it's running. After it runs a while, pull the dipstick and see it the oil is milky looking. A 235 shouldn't be hard to find cheap, but if you're on a tight budget and counting on this to be a good motor, you don't want to get burned!
