I only have the manifold that came with the 2072, its looks to be long compared to the XS reds manifold on my brothers buggy, so was thinking a shorter manifold would help a little with the 2072. I'm waiting for the hobby shop to call back as they were going to see if they could find out for sure, but as long as the 2103 doesn't give more bottom & gives more mid/top then it will work alright on my engine.

Also, I was just looking at the GO Champion 4 port engine, it comes with a 2104 pipe, is this 2104 pipe the same as the REDS 2104, the shape is different so wasn't sure if they worked the same.
Is the GO 2104 pipe a mid to top end power pipe similar to the REDS 2104 with xs manifold.?