Hopefully someone responds who has the same combination to know for sure. I have the 2005 MTH Dreyfuss and found none of the MTH cars made to that point matched the engine. Neither does this engine match the GGD cars. Lionel only made the engine and then some 15" cars. Lionel's and 3rd Rails engines do not match any of the MTH cars.
When the latest MTH set was released a few years ago I asked the dealer that posted a video on this forum if the new engine and cars match and he indicated they did. No guarantee it will match the early release though.
Pete