Can I replace just the keyboard?

My MBPro A1286 Intel Core Duo Model 5,1 got wet last weekend. Now several keys don't work. I did some research and found out that most parts providers offer only replacing the top case along with the keyboard. (pretty expensive!) Then I found this site Link text that offers Just the keyboard (much better, money-wise) Seems to good to be true...Is this doable? and how come you don't have a guide here for this procedure? (did a search with my model number and the closest I got was to a top case replacement guide) Thank you!