Caleb,
Well see the "inside of the door panels" comment I made, you may not have to do. let me point it out a bit better for you....
Have a look:
See the "red blocks" I added to this picture?
ARE those areas screws? The 2 in the center look as tho they are and have philips screws in place that hold the frame in.
IF this is correct, that means inside that body, where those holes are on the frame are "blocks" added for mounting the frame to the body "shell".....follow me?
NOW granted this frame, isn't badly detailed, BUT I bet its nothing like that of a 1:24th scale model in details, Why you ask? On the actual plastic mode, the motors compartment, would be "open" with the hood lifted, you would be able to see the table under it, with the factory frame, you can't do that! This means that the motor isn't "detailed" either, as your only seeing so much of it and its not a completely modeled motor under the hood, it only "looks-the-part" A model on the other hand is to be a replica! This is why the model frame, would be better....
BUT, that "better frame" also has its down side. you have to detail it to get all that added "extra" on the model.....
See, the Panther Pink 1969 Dodge Charger in the other thread, I posted. that body, is a diecast body, I took the factory frame and machined out all that "cast-in detail" to add my own motor, and my own details. I bought that diecast toy from a yard sale from an old school friend. The actual car, was a diecast General Lee, that his sister took out a fit and ruined it and he just put it in their family's yard sale. I got $1.00 in it, and the time to repair it. BUT its not going to be a General Lee when I'm done!
This is basically the same thing your working on, or going to try to do with this Duster.........I have to say, it is fun, BUT take your time on it as if you want it to come out as you want your real car, BOTH take time!
But see, I mentioned those inside body "blocks" for mounting the frame to the body....BUT, it looks like it already has them!
Make more sense now?