Are you sticking with the 73 bumpers, I am doing a similiar build and have decided to go with 71 bumpers both front and back. They tuck in tighter and are alot lighter.
So finally dawned on me late last night that the meral shaving in the motor where from when i cut the headers off the block but kinda sucked cause i was gettign excited to through a new hemi in it instead oh well thats was suppose to be down the road anyways..