Way too much overkill. I have had 2 different HD mufflers on my bike. Night Train and Low muffs. 65842-07 and 64941-07. First of all, don't give over $30 for a perfect muffler. Use the clamp that you take off. get a few 1/4-20 bolts of lengths from 1", 1 1/2", and 2". One of these will likely be perfect. Also get a 1/4-20 nut and three washers ranging in size from 1/4" and up. The HD muff will either have a couple of threaded holes (1/4-20) or a slot. If yours has a slot you can use a Carriage Bolt and skip the washer or maybe use 1. Slide your new muffler onto the header pipe with a home made gasket from a Dr. Pepper can cut about 1 1/2" wide with scissors and wrapped around the header pipe. Forget that for a minute and either bolt the muffler from the outside through the OE muff bracket or slide the bolt into the slot and mount it through to the outside with a nut and washers as needed. Go back to the joint and tighten the clamp very tight. 30 minutes have passed and you are done. Also check the "Technical Section" before you start.  Boofer

It takes a while - but some folks have had the inner baffle come loose on the DYNA.  If your muffler is welded to the header, it will make the replacement a lot more work.  And.....there is the chance that you might find a muffler you like better, and making a switch will be a lot more work.

I wouldn't weld it......it is just a bit too permanent.

Yeah, well, I might be ahead to look around just a bit more locally. The UPS truck might have trouble with it from there.

Our local dealer has no deals. Buy new, pay retail.