1986 omc cobra transom mount

[50kstrafo]

I just replaced my entire transom mount on my 1986 Renken with a 1990 omc cobra transom mount. The original exhaust Y pipe (911891) does not fit the flange on the new transom mount. OMC changed the flange. Can anybody suggest a Y pipe that will fit this application?

 

[bondo]

Ayuh,..... Where'd ya find the '90 transom assembly,..?? Do they still have the y-pipe,..??

 

[50kstrafo]

I found the new transom mount at a local marina and they did have the Y pipe. OMC changed the pipe design and the flange after 1988. The new design does not fit in my boat unless I modify the stringers or get something welded on the old Y pipe.