Zippers is where to go if after Power .. Just glad to see what they check out first before adding it .. Bet this wasn't cheap but at least they are fine team .. Just wondering if they replaced the ECU with their own .. I know on my 2009 Ultra they replaced the whole ECU with a Zippers Performance Rather than Piggyback or upload through the diagnostic port to the existing ECU ..
In my younger years, if I had the money, I wouldn't hesitate to tear down and add performance parts to a new engine. Heck, they were a lot cleaner to work on than some salvage yard engine I wanted to rebuild.
Now I look at it and think if it ain't broken, don't fix it. But it's just a personal opinion.