GMPP ZZ383 Stroker made in USA. I saw the crate label. Funny enough it was next to a 350 crate that was from Mexico :-) I have been concerned about the rings because of the plugs. The majority of them are dark. And I have been told by a motor builder that he thinks a stroker with low tension rings will have the potential to use oil due to the increased vacuum it draws. And he feels even plasma moly rings need time to brake in. So I am in search of input, and I thank you for yours.
BTW is there any easy way to check on the items you mentioned?