Haven't done them myself, although would be a great addition. CDC has install docs on their site. Here is the one for the side scoops, but not too informative IMO - So yes to the 3M tape.
we use the same 3M tape @ my job that alot of companies use for their stainless bumper inserts and these side scoops. its Badass! $100 for 1 roll! BALLIN'