I have bought about 19 different engines from J&J motors and to this point only one in their motors has ever damaged down on me, and hat was immediately after about 6 months use. They were being speedy to type it out and have me a alternative product, under their https://httpsjdmengineforsalecomp43208.wikibyby.com/1383955/https_jdmengineforsale_com_product_jdm_mazda_rx_7_fd_13b_rew_engine_for_sale_no_further_a_mystery