Civic EG

I have headers and a complete catback exhaust system from ebay that I think is 3" in diameter.

Does anyone know if one of these universal silencers really work?

http://www.ebay.com/itm/REMOVABLE-SILEN ... 6b&vxp=mtr

that one looks like it wont quiet it much at all, might be less raspy but not quiet. my silencer has a inner diameter of about 1.5 to 1.75 inches. it quiets my 3.5 inch can down good. i am about to remove my can and weld in a thrush muffler