I've purchased about 19 various engines from J&J motors and so far just one of their motors has at any time damaged down on me, and hat was just after about 6 months use. They were brief to kind it out and get me a alternative product, beneath their guarantee. https://httpsjdmengineforsalecomp65319.thecomputerwiki.com/5498773/rumored_buzz_on_https_jdmengineforsale_com_product_jdm_mazda_rx_7_fd_13b_rew_engine_for_sale