1969 LS6 CRV 512 engine and heads for sale

I just bought a jet boat and the gentleman I bought it off of told me it had a 1970 LS6 engine. I asked him how he knew and he said he bought the chevell it came out of in 1973. He rolled the car in 85 and the engine has been sitting in his shop till two years ago. It was then he sent the engine to the machine shop and spent 4500. The engine was built in july of 69 and is a true Ls6. The heads were built in may of 1970 and they are correct for the engine. The engine screams now and can be driven in the jet boat. The last one of these that went on ebay brought 8600.00, I am asking 7500 for this one or 7000 without the carb. Thanks for looking. Call me at 405-620-2850 for more info.