An issue on the 6.4 swap into the a body is the variable runner acuater hitting the firewall under the wiper motor. Have not heard if that is an issue on e body's. I am planning on an 833 trans for now. You have to cut so much anyway for tko I would go a little further and go the t56 even though I do not think I need the six speed. An e body swap like b body leaves a little more room in an already tight engine bay for the 6.4.
