dssur
+1y
you can take them to a machine shop and have them done, thats what I did.
I saw a tech on nissanminis.com about using two hole saws, one the size of the current centerbore and one the size of the nissan centerbore (used together, the smaller one rides on the original centrbore and keeps the second one square. Looked like an innovative way to solve the problem but I cant say how well it works.