I actually like your guarantee prospect, plus your rationalization regarding my JDM Engine 4AGE Blacktop which I can have to switch. Excellent professionalism and service thus far!.. Nissan RB30 ring gear, removed from factory flexplate, able to healthy to aftermarket high horsepower flexplate, yellaterra or raceglides fits other RB engines. https://charliedggfe.blogprodesign.com/54096120/nissan-rb-engine-for-sale-an-overview