Well, have fun with it!
While I'm relatively new to the current generation of Enfields (the 50's model I had some decades ago doesn't count), I'm pretty well acquainted with making old technology engines work well.
I won't bore you with my radical approach to break in, which involves following the manufacturer's recommendations and managing heat cycles in a conservative manner (told you it was radical. None of this "fast break-in, fast bike" nonesense.)
I have a new-to-me sixty 5; here's what I'm doing.
Replacing the exhaust with the classic exhaust; the comes-with is apparently solid inside. Although it's the size of a locomotive boiler, it behaves about like a piece of wood. It chuffs like a steam engine. I can't stand it.
I slipped on a K&N, but I'm not sure it's really necessary, the OEM air box looks like it can be tweaked to breath pretty well and looks very cool. More on that later.
Re-jetting to work with the breathing changes, of course.
7" headlight, just because it looks better.
Different seat; the OEM is actually pretty decent, but what the heck.
Pulled off the catch can, let the breather vent to the world. There are lots of solutions to that, including a nice kit sold by CMW to vent the breather to the oil tank.
Removed the jumper in the headlight shell so the lights can actually be turned off. No particular reason, other than a retro-lust for things as they were before the motorcycle design engineers in Congress got into the act. What's that you say? There aren't any engineers in Congress? That's a different rant.
I think it's gonna stay like that for a while, at least unitl the big-bore bug bites, aside from cosmetic issues. I'm going to re-paint a tank with the screw cap over the winter because I like the screw cap better than the flip cap, but that's just a personal quirk, hardly a necessary or performance item. I've got an electronic ignition sitting on the shelf that might or might not make its way on.
Personally, I think the turbulator is snake oil, if it did anything useful we'd find it OEM someplace. There's plenty of turbulance now what with a big ol' piston churning up and down and all that other stuff. Some swear buy, it, and it's cheap, so have fun.