Wheel Opening Moulding 2000 Tacoma SR5

Anyone have any experience installing these Wheel Opening Mouldings with pads?
The Factory Service Manual calls the rear "Quarter Wheel Opening Moulding" and the front is called "Front Fender Wheel Opening Moulding".

They are the flared type used on the TRD Prerunner models not the smaller chrome strip type the manual calls "Arch Moulding"

It looks easy but I want to make sure the fit is tight against the truck to avoid any collection or water etc. Any experience??? Ideas??

 

Do you have the parts in-hand?

 

No not yet, the OEM parts from Toyota are very expensive (like $200-$300) per wheel opening and I didn't want to spend that kind of money only to find out I can't get them to fit properly.
Thanks for the reply