schumaker header problem

Ok, I have really confused myself now. The 70 Duster came with a 318, now 340; bracket behind ears, no spacers, trans bolt forward on crossmember.

340 block out of 70 original 340 Swinger; rear, but driver side top needs 3'4" spacer.

But 20 years ago, my Dodge 150 (that Mustang 5.0 killer is gone now) got the 318 swapped out for a 340. Maybe some brackets got moved around.