How best to modify/drill stock 4-2 exhaust on 1998 RSTC?

[Lug Nut]

Got my brackets cut down to support my stock exhaust. Can't find any Harley mufflers in the are and don't want to mess with making new brackets. How are people modifying/drilling out the stock exhaust to get lower/louder sound?

 

 

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[Rick Haywood]

Don't drill them they will sound like crap. I am not dure but if road king tke offs will slip on that is the best way to go. They sound good and you can buy them all day long on ebay for 40 bucks or so