Seeing this I wish I built my mill bigger!

http://stores.ebay.com/NEMI-Industrial-Store_Router-Spindles-Mill-Spindles_W0QQcolZ2QQdirZQ2d1QQfsubZ2QQftidZ2QQtZkm

Having those 12HP routers rebuilt will set you back at least $2500, maybe more. Then you'll need 3 phase power, and an expensive inverter. For less money you can get a complete 3HP Columbo, brand new.