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I bought this Streetported 12a about a month ago for around 3k. The guy who sold it to me said that rob from pineappleracing had rebuilt. And that he had a stamp on it proving its authenticity. But I just wanted to ask if this is one of robs real stamps. Also I had heard that rob has passed away and does that mean that this engine has gone up in value. I have not put it in my 85 rx7. The guy I bought the engine from said it has 120psi on all faces. Just wanted to come here and check and see if it is real from y’all’s experiences with pineappleracing. And what does the 7/10 mean on the stamp?