You are probably correct. I only hope the floor joists are running east to west. The pipes are all copper so it may cost a few dollars more but I figure that the plumber and new tile will cost 1/3 that of a new top!
I also considered adding a new 1/2 bath in my basement and using the old corian top there! I will be renovating that area next anyway! Tha only problem with that idea is that I still have to buy a new cabinet and counter top... Another 1000.00