Just buy from FCP Groton
Buy the entire E39 front end kit (I-6 or V8 as appropriate) from FCPGroton on e-Bay (a 99.9% vendor), and you will promptly receive not only a bushing, but completely new lower control arms (both fore and aft), with the NEW BUSHINGS ALREADY PRESSED IN!! You also get new tie rod ends, and in the I-6 kit, sway bar end links are also thrown in.
This also eliminates the need to have the special $250 ball joint press tool (yes, you have ball joints that also wear out, on the other ends of those arms), because it doesn't matter how much you bang on the old arm to get it out (you wouldn't be re-using it).
Just a suggestion. Other than that I agree with the above comments if you are going to be pressing a new bushing into the arm.
2006 Honda Odyssey EXL-RES
2006 Honda Accord V6 EX-L Sedan
1999 BMW 540i 6-Speed (Sold to M3UOND on 9/21/06)
1991 Honda Civic Si - Occasional Beater