So I just bought a 68 Post Coronet and also bought a k member with disc brakes attatched to them. I know it's factory chrysler but the guy said it was an ebody and that it would be the same and work. I just read the other post about the ebody k member and that the steering was different. I pulled the numbers off the motor mount and was wondering what I have? They where not the greatest stampin but I was able to read MK34631 or MK84631. I measured the rear mounting holes and they measured just under 34 inches. From the right rear mounting hole to the left front hole it measured 36 1/2. Both of these where measured from center to center.