MY mabnifold is very small. I need to enlarge it around the part where it does a 180 degree turn into the port on the motor. I have to extend it a little farther back to fit the pipe because the pipe is 1/8 scale and I have a 1/10 evader. I hope this works because that pipe will cost me a pretty penny. Also I have heard this pipe is really good and boosts engine power by about 15%