71 duster slant six conversion to 340/727

I Always do motor and trans together. Usually I am pulling both to add parts though. Also I had the headers sitting in hooked up before I put my motor in for the first time. I run hooker headers and it is a PAIN. Also get a mini starter. And you will need the drive shaft cut down. It's not the simplistest operations but then again I have done worse. Good luck and make sure not to hit anything expensive when you throw your wrenches.