Looking For Exhaust Diverters for 496HO
 

I have fountain mufflers now with open Y pipes. The exhaust equalizes between the mufflers and exhaust horn. I believe they call it a quick and quite exhaust.

Anyway, looking to add silent choice and I need tips , the pump , switch and Y pipe diverters.

I do not want the electric diverters. I want the air cylinders. Every place I look the diverters say they do not work with the 8.1 496.

What is the deal with exhaust diverters for a 496.

Are they a different diameter? 3" vs 4"

Where can I get the exhaust diverters for my 496HO.