440 will not fit in duster ? ?? need help assap doing motor now !!!

I always thought the best way to install a big block was to bolt it to the k frame first and then roll that in place under the car.Jack the k frame up enough to get the bolts in and lower the car onto the frame. I think this method can be used with the tranny bolted to the motor as well as long as the cross member is out.

Think I might try this with my 400 install.