I am with you....just building one with the old mpc-kit.
If you have the Chance, use the two revell kits as shown above. i will do this the next one, i will build. And yes, the moviecars are "all" different. If you will make a correct GL, choose the season, movie or what ever and build exact the one, you choosed. I am building the one from the movie 2005. some modifikations, some stuff to built but all can be done