I've recently removed the roof rack from my 1990 740 wagon and plan to keep it off. Any suggestions as to how I can plug up the mounting holes, with what, and how I can keep it looking as clean and inconspicuous as possible? I'd like to make it so I can put the rack back on if need be. - Thanks!

 

The only thing I can suggest is finding the proper size rubber plugs with a flat top.