Hi, Your post makes no sense. 1. Do you have a Hong/Nor/ OFNA X3 Sabre buggy? If so which one do you have and what engine is in it. If it the rtr version with the pull start 28 your going to spend a fortune getting it up to par. Hyper parts will not fit with out some kind of modifying the car to make it fit. So to answer your question you have two choices go to ebay and put the car in the browser and look for the parts you need or go to nitrohouse on the web a look up the parts that you need. if you have the 28 engine the pipe you have should work well. Michael