Replacing a wheel spat

To clarify Swift use screws AND adhesive - see my earlier post! 

This is the part in question, no screw holes, and nervous about drilling some!

https://caravanpanels.com/sterling-caravan-twin-wheel-spat-002-2952-p.asp

Our van is 15 years old and Swift no longer supply parts for it, but the part from CP is identical to the one still intact on the van.

If I do drill it for screws, where should they be positioned?

I cannot see a flange on the outside on the spat where it would sit next to the van, so I'm guessing it must be on the inside. I'd be tempted to put three screws along the top edge and one low down each end, about 70mm up from the bottom possibly.

Colin

Hmmm.....I am starting to think I might ask our dealer to fit it!  

When  OH booked the service she did discuss it with them, and they are happy to do it if required.

Do not remember seeing a flange inside, but it is a while since it arrived,  need to check,  It is  sitting out inside the van at the moment.