Probably never, ever get em centered enough to ever balance those wheels again. That's best left for a machine shop with proper equipment. Not to mention that the structural integrity of the wheels would probably be screwed. To do it correctly, all existing holes are closed and then the new pattern machined in.
95 Thunderbird LX 4.6
K&N cold air intake. True 2 1/4" duals, Xenon GFX. 3:55 Trac loc. Beefier trans, 2800 stall convertor, MkV111 aluminum driveshaft.