can anyone out there who still has one of the volvo penta inline mufflers in their boat please tell me either the model/type number and or the dimensions. I changed mine a while ago for a vetus box. More recently i have been using the boat in conditions a bit more interesting and found the next time on start up a plume of oilly looking layer on the water. I have come to the conclusion is because i can not get a straight drop to the water lock/muffler using the vetus as it should be used. so going back to what use to work only problem is i disposed of the original unit so no idea what the dimensions are . I think its a small unit about 440 in length and about 165 diameter. thanks in anticipation.don