The case came from the engine I bought from an SOC member. This build started with a $1500.00 engine that was a 2056 Raby engine that had a Raby serial number. It was known to have at least one cylinder with low compression. This may have been from the same issue I am dealing with because the engine only had 2500 miles on it. I was recently told that the cases on type 4 engines are known to warp if over heated. My engine builder wasn't aware of this and didn't deck the case halves. This is what we are setting straight now. So to answer the question it was a used Raby prepped case.