Just to keep me on track with reality could you locate your casting numbers and put them here in the thread. Maybe the block code, carb code, head code, etc.... Wouldn't need a camera for that.
Reason is we are all gonna be miserable until "WE" know if that's a true SD. I mean no offense but some folks just don't know how rare it is to stumble onto a real SD.
Also, if you think a piece of the dipstick has broken off and is loose in the bottom end of a SD block and you are cranking it and letting it idle there may be more pieces of that dipstick than one could ever imagine. LOL
