Here is a new pic of the motor.
https://www.ford-trucks.com/forums/m...-dscf0834.html

Here is a pic of the test fit.
https://www.ford-trucks.com/forums/m...-dscf0828.html

Here is a pic of the header, fits like a glove, this is the closest spot about an 1/4" from the frame.
https://www.ford-trucks.com/forums/m...-dscf0830.html

Here is some pics of the bronco with fresh coat of paint on the frame.
Ford Truck Enthusiasts Forums - kenv429's Album: 1978 bronco 300-6 - Picture
https://www.ford-trucks.com/forums/m...-dscf0832.html
https://www.ford-trucks.com/forums/m...-dscf0833.html