All engines are guaranteed in very good Doing work order when supplied and have been examined right before dispatch from Japan. The startup guarantee handles the engine block, not any ancillary elements like turbo, alternator, ECU, etc. There are many stroker kits obtainable for RB Engines (some only available as https://rb26dettcompleteengine65295.activosblog.com/30445994/nissan-skyline-engines-secrets