I agree. That's the path I'm going with. I'm actually starting with the Cycle Shack Performance baffle ($55 - #1544
http://www.cycle-shack.com/cycle/agora.cgi?cart_id=7759328.26161*oJ3Dy7&p_id=1544&xm=on). I have already made the stock baffles in my 2010 FLHTCUSE5 removeable. If I don't like the CycleShack baffles, I will then likely go with the 2.25" FullSac baffle as a part of my engine build plans.
I ground out the welds using several different shaped grinding stones (available at any WalMart or Home Depot) and my dremel using the flex shaft attachment which definitely made the job easier. Buy extra stones as I went though several grinding wheels per side. Maybe about 30-45 minutes of grinding per can. Go nice and easy and its really not too difficult (although it is tedious). I did 95% of the grinding while the muffler was still attached to the bike (tips removed). I also had the bike on a portable lift which raised the muffler to a convenient level for grinding. You'll need a bright worklight on a stand that can be directed into the muffler. Once the grinding was close, I removed the mufflers and the heat shields.
Then I used a worklight on a stand shining into the muffler while I held it between my knees and completed the last 5% grinding. Once the grinding was as close as I could get it, I dropped the baffle end straight down on a piece of carpet laid on the garage floor. It took several attempts with an occassional grinding in between but eventually the welds broke. I then cleaned up some of the remaining weld on the muffler wall while the baffle was pushed deeper into the muffler.
Then I stood the muffler on top of several 4x4's with the baffle pipe sticking down between the 4x4's. I then took a stiff metal rod and hammered the baffle from the inlet opening until it pushed back through the muffler. It can only go as far as the 4x4's it's resting on, however by then I could get a good grip and twist it free from the muffler. Once the baffle was out I used the dremel to clean the interior wall of the muffler to free it of an weld remains. I did the same to the edges of the stock baffle.
I then drilled a .25" hole that was centered on the rear, bottom of the muffler. The hole was placed 1 3/8s inch from the end of the muffler. I started with a center punch to get a mark in the hard chrome, then started with a small drill bit and worked my way up to the .25" drill bit.
I then re-inserted the stock baffle (I don't have the performance baffle yet), until the lip of the baffle was fully seated over the hole I had just drilled in the muffler bottom. Once it was in place I took the drill with the .25" drill bit and went through the muffler hole I drilled earlier and then through the lip of the baffle. I actually reamed the whole out abit to make it easier to insert the buttonhead bolt in the future assuming a "less-then-perfect" alignment when I replace the stock baffles. I had already gone to the hardware store to pick up 3 (1 extra) SS .25" x .5" buttonhead bolt with matching SS lock washer and SS nut (cost $2.00). See the results below. The whole job cost less than $10 for the bolts and grinding stones.
I think the result came out nice and looks as if it came straight from Harley. Once the baffles arrive, I can swap the stock one's for the Cycle Shacks and see if I like the sound and if there's any performance difference before taking the bike to the shop for engine work. Once the sound/performance is right, I'll be swapping out tips to the Harley slash-up tip for a "large pipe" look.
Now if only someone could tell me if the 2010 96" touring bikes with the same 2:1:2 header is clean of any catalytic converter or was the MOCO forced to incorporate the CC into the smaller engine bikes as well? Does anyone know for sure if the 2010 headers for non-CVO bikes are free of the cat? I am hoping to swap out my CVO header (with Cat) for a non-CVO header if they are cat-free.