Spin tech muffler with exhaust kit?

[khc3]

I see that Kooks sells Spintech mufflers; can they be used with the exhaust kit Kooks is putting to gether for the MM? How loud are they relative to Magnaflows?

 

[DONP1217]

You can weld any 2.5 muffler to the Kooks kit. I'll be using Flowmaster 40's on my car with the Kooks kit. You don't have to go with the Magnaflow 18's unless you don't want to do any welding.