1) I wish I could tell you now but it still isn't installed yet. I will post up my findings when I get them though.
2) I was told by 80 owners that have done the SC in the past that before you put a SC on a higher mileage engine make sure to replace; the HG (if original) or unsure when/if it was ever done, compression check, replace fuel filter, fuel injector cleaning, flush cooling system & replace thermostat, blue or black hub fan clutch, replace any leaky oil seals and ensure that your transmission is up for the additional performance with a flush of fluid an cleaning the filter. Since I was already "in there", I also choose to replace the fuel pressure regulator, vacuum hoses that weren't affected by SC install. PHH on the driver side was also replaced on the driver side (newer but compressed from clamp hose and didn't want to use them again)
I also had intake plenums dipped to remove carbon and aluminum ceramic coated along with the exhaust manifolds and the stock airbox. The airbox was then powder coated black on top of the aluminum. These last few items were personal choice and not recommended by anyone in the cruiser world i.e Mud but the folks that do alot of NASCAR work here in the area recommended the coatings to keep the underhood heatdown and keep the intake air colder.