Wouldnt it just be easier for me to fix/rebuilt this one. I have most of what I need and can get help from my local engine shop. I know that most members on this site rebuilt the 454 for performance but thats not really what I need for my rv. So cost is a consideration but on the otherhand peace of mind is important when I go travelling so I will do whats necessary and will know soon enough because the engine will be apart by the end of today I suspect.