Doug's Headers in 64-66 A-Body

The D450 will work with all combos except I believe 727. I'm literally going out to my garage to stab the motor back in my 65 dart in the next 20 min. 360 with 904 but I'm going to run it in from the bottom with tranny hooked up then mate it to the K member. The headers have been a real ***** so far and I wish I went with the Sandersons. I don't like the way these Doug's fit. Where are you guys tying the motor down to? I would assume the K member to block right? I'm going to pick up some heim joints because I know when the motor torques over its going to rattle like hell on that torsion bar and piss me the F off. Any other input will be well appreciated before I start throwing tools.