I put center riser manifolds on replacing my log style on 1981 mercruiser 260. I changed out y pipes and put one on that went with a 1984 3" center riser manifold. My dilemma is I have the 4" riser and the 3" ypipe and the elbow that goes from 4 inch at the riser and 3" at the ypipe but when I installed it, it Land just on top of the ypipe exhaust tube. Which is 4 inches high so what I think i need is a exhaust tube coming off the ypipe that is 6" high. Do they make such a thing or should I approach this different?
