From 6 to 8 syl in `66 Dart - tips?

I'm just getting started on my swap /6 to 318 in the 66, I've been buying parts for over a year the first parts i bought were the disk brakes the 9'' drum brakes are the first thing to go! i want'a be able to stop LOL then tie the frame rails,Like all the others have said gather all your parts first then you will know what your up against.I'm running a 727 in my swap and the magnum manifolds. Have fun with your swap like i am LOL