Hi Kevin.

I too have a 1998 RAV4. I don't have the OEM roof racks, mine's are Thules. But they should be very simple to install.
Tell your father to look on the outer edges of the roof and he will see a black rubber trim running along the sides of the RAV. There are 2 sliding covers on each side. By sliding these covers open, it will expose a set of brackets that the OEM roof rack will attach to. The roof racks should have some matching hooks on the bottom that attach to these brackets.
I am not too certain how these hooks tighten down on the brackets, so hopefully someone else reading this post can enlighten us all.
By the way, welcome to the forums! You are a great son to buy your father accessories for his RAV. Can't wait for my own sons to grow up to buy me stuff for my RAV. That may take about 15-20 years. :lol: Mahalo Kevin.
