Difficult to get ahold of somebody. Ive read difficult to get response with guarantee repairs. I do think they place out a very good item however. Just need to speak & receive a new engine. Nissan RB30 ring gear, removed from factory flexplate, wanting to in good shape to aftermarket https://nissanrbengineforsale71470.mpeblog.com/57299391/not-known-factual-statements-about-nissan-rb-engine-for-sale