HI, I just bought a riser off e-bay to replace my old rusted one. The old one has a pipe that seperates the water and the exaust in the exaust elbow. Sort of a pipe inside a pipe. The new one doesn't have the interior seperating pipe. The two risers are nearly indentical and I was told the new one was off a 1987 165. I believe my 165 is a 1987 also. So, is it ok to bolt on the new riser without the interior seperating pipe? Thanks, Glen
