I just got a jeep CJ7 1981 model. It has an Amc 151. It is completely stock no rust, hard top (never been off), almost every piece of rubber needs replacement. Seals and gaskets leak (engine and trans). As far as old cars go it is in remarkable condition. I want to do a frame off and coat the undercarriage to prevent rust and maybe upgrade brakes and suspension but I would like to keep the engine. Any ideas/advice?