Ok I've decided on getting a Surco Safari Roof Rack. I have a 2000 4runner, but I can't decide on what size the rack needs to be. There are so many different options.

S4050-40" x 50"
S4550-45" x 50"
S5050-50" x 50"
S4060-40" x 60"
S4560-45" x 60"
S5060-50" x 60"
S5084-50" x 84"
S8036-80" x 36"
S8072-80" x 72"
S80100-80" x 100"

If you have any advice please help, I would really appreciate it.

If your looking for a roof rack these look great.
http://www.surcoracks.com/surco.html

Thanks a lot.

i like when the basket fills the top of the roof. i'd measure the width of your roof and from the back of the front doors to the back.

Get the 40" x 50" - Standard rack size