Sikalex first then clips/scrivets or reverse order?

[Fordford2]

Fitting stock skirts to a bf ute, I would prefer to use the 3m tape but at the top of the skirt the part that touches the car body is about 2mm wide & it turns in so there is a triangular shape below it with single sided foam tape about 10mm beneath that and the side part has about a 15mm gap between the body which is where the sikaflex should go, the double sided tape would need to be about 20mm & triangluar shaped to work.