If your asking me no, I have not fired mine yet... Been waiting for some tools on line ( Dog bone torque wrench adapter) and I am a bit of a fiddle fk........Thanks for the response...Have you ran the motor yet? If so, if its got good oil pressure and power, you should be good. If its got good oil pressure, but feels significantly slower than it should, you can remove the plug on the bottom of the engine, and if more than a few ounces of oil comes out- like half a quart or more, then its sumping and the oring is not seated correctly. S&S has an article where a bike made 20 hp less than it should have, so they checked and sure enough, the crank case was full of oil, which was what was causing the power loss. Think of it this way- running through water that is ankle deep vs running through water that is hip deep- the flywheels drag in the oil, causing huge power loss.
The springs look like being cylindrical and double like the original pre 2006 springs and then your valve lift is limited to .510 inches.Take a deep breath.
06 heads came with beehive springs.The casting design still dates back to 99.If the valve stems measure 7mm then there's no reason not to believe the heads aren't 2006 heads.