Having worked on both these machines more times than I could possibly remember (and still counting!), I can safely say there's absolutely no chance of sticking the two together. Not to sound as though i'm not up for some good old fashioned hackery, but you'd have to do the equivalent of re-engineering several key components, hacking away at the cases and making some incredibly complex adapters just to make the thing power on, let alone bootable. Even if you were to go that route, it would cost more than a new MacBook Pro 17" by at least five times over and still wouldn't have anywhere near the performance and battery life of one of those newer systems.
If you're referring to a MacBook Pro at 17-inches, it's less hacking but if I recall the display circuitry is quite different at the logic board level. Nowhere near as much hacking required but at the end of the day, it still won't work. The hinges don't look to be the same either.