Stratix II top / bottom bank LVDS inputs

An easy way to check these types of things is to use the Quartus II Pin Planner feature. This new feature lets you look at all kinds of things related to your pins. It's especially useful for exactly these types of questions. It shows a graphical representation of all the pins and their functions.

The easiest way I found to do this is to go to the Pin Finder (binoculars button in pin planner) and set up a query for I/O standard = LVDS. The query quickly returns the number of pins per bank that meet your criteria. In this case you should divide the number returned by 2 to get the number of LVDS channels.