Offcourse, but the silent choice is a must for me.

My ears hurt just for looking the picture . And yes, i love the big inch bbc sound but not in every situation.

I totally agree with this^^^ it works, you should give it a try.

Allready extended to the transom, check the pictures of the first post. I have a pair of CMI sound eliminators, but dont know how much those will effect, not much info about them in the internet.

I used to run CMI sound eliminators, they work well and are convenient as they are automatic.
However they don't work well for engines over 700 HP as they can't flow enough exhaust gas.

The extended risers you show with the silent choice you have pictured makes no sense. How could that possibly work??

Thats true. the diverter is just laying on the inner pipe extension , wich is not cutted yet, but it is impossible to know the correct extension lenght before the engine is installed to the boat. Trying to get the diverters as near as possible to the transom, so the diverter outlets for the y-pipe is going to be cutted of and turned 180deg, that is not yet done in the picture, but i tought it would give an idea how it looks like when it is done. the riser dimensions in the first post are rough estimates of the final dimensions when everything is fitted. Hope this makes sense.

Isnt the diverter location dictated by the y pipe location?