I have bought about 19 unique engines from J&J motors and up to now just one of their motors has ever broken down on me, and hat was following about 6 months use. They had been rapid to sort it out and obtain me a alternative model, below their guarantee. https://dallasiwhmu.tokka-blog.com/34472342/https-jdmengineforsale-com-product-jdm-mazda-rx-7-fd-13b-rew-engine-for-sale-options