My pipes are 3/4" OD and 5/8" ID. I don't have room for a muffler. I am just running the straight pipes. Pleas speak in English inches so I understand. I'm not goo with millimeters. I always have to go to a conversion chart. What do you have as far a stainless steel flex piping that I can slip into the exsiting pipes and weld them in. That way I can position the stacks where I want them. I can't find anywhere that sells it that small.

Gibbs