MacBook A1181 Logic Board Compatibility?

Hello,

I'm hoping to replace the logic board on my Macbook. It's a 1.83 Core 2 Duo (T5600 - late 2006 model)and I was wondering about compatibility with other A1181 Macbook logic boards. Specifically I was wondering if I could use the logic board from a 2.16GHZ Core 2 Duo (T7400).

The one issue I can foresee is that the T7400 is an 18 pin connection and the T5600 is a 20 pin connection. I was wondering if there were other compatibility issues, or if these two boards could be swapped out.

Appreciate the help!