Wipe the area first with a degreaser/thinners/panel wipe etc if you want them to stay there.
The foam backed sticky tape is known as BODY TAPE, cheap enough from car shops etc.
Put the strip in a bucket of boiling water for 10 minutes first they will then go on flat.
You can use LOCTITE 5900 5910 to stick on as well, don't need a lot, have stuck spoilers on with this works perfect.
tabetha