I have acquired about 19 unique engines from J&J motors and thus far only one in their motors has ever broken down on me, and hat was just after about six months use. They had been speedy to type it out and have me a substitution design, underneath their warranty. https://rowanfzqgv.wikihearsay.com/3340307/details_fiction_and_https_jdmengineforsale_com_product_jdm_mazda_rx_7_fd_13b_rew_engine_for_sale