I've bought about 19 different engines from J&J motors and so far just one in their motors has ever damaged down on me, and hat was after about 6 months use. They had been brief to type it out and get me a substitution model, underneath their warranty. Pretty clear-cut https://https-jdmengineforsale-co90013.wikissl.com/1379077/5_tips_about_https_jdmengineforsale_com_product_jdm_mazda_rx_7_fd_13b_rew_engine_for_sale_you_can_use_today