Desperately need experienced opinions on Engine Identification

Guys, I really appreciate all the advice. But the engine is 1K miles away and I have no way of looking inside the engine to verify the pistons. Basically, I have to make a decision on the information I have. My guess is at some point, somebody swapped a 67 top end onto a 65 bottom end. Maybe the Formula S had a bottom end failure at one point and somebody swapped in a junkyard bottom end, but put the top end back on since it had the better heads and intake. Think I will probably pass on this assembly. Too many red flags. Back to looking for a power plant for this poor car.badassrubicon.jpg