I wish my 80 had come rackless. I found something out the hard way: the OEM luggage rack on the 80 will support a lot of weight in a downward force; it will support much, MUCH less weight in an upward force.
Case in point: I used to use my roof rack to haul a couple of longboards. I surf mostly 10'+ surfboards, and I strapped them onto the roof, so that a section of the boards were hanging over the windshield. The updraft associated with highway speeds elevated the boards to the point that they were pulling UP on the rack instead of pushing down. The screws eventually tore right out, and I came within seconds of losing not only my rack, but two very cherished surfboards as well.
This, compounded with the rusty, nasty mess, and headache of sealing the (now completely stripped) holes against leaks, I envy your position.
I'd say to look up Quik-n-easy roof rack products. They are a Yakima-like gutter mount system that attaches via levers instead of being wrenched on with tools. Best part is that I can take them down in seconds when I'm not using them, and I don't have to deal with the howling sound at freeway speeds, my gas mileage is slightly better, and parking garages are less daunting. They go on in about three minutes.
Here's a thread I wrote about them when I picked them up. I still think they're a great product.
http://forum.ih8mud.com/camping-outdoor-gear/109607-quik-n-easy-products-roof-rack.html