67 Cuda 5.7 Hemi Tranny Advice Needed

Since you are using the alter-K, it is not that big of a deal to modify the tunnel to fit the 545. You don't have to worry about the cross member for the torsion bars, because you won't be using them. I'm sure you could get a piece of floor out of a ram which might make it easier. The nice thing about the 545 is you can adjust shift points, tire size, etc. with a Predator tuner along with your engine. If you want to see how I did it, check my build in Members restorations. Plus you have more room in your 67 than I did in my 63, and it fits fine.