Can someone here tell me where the block number is on the 429 in my 73 f-100, I would like to find it so I can post it here so one of you gurus can tell me what the heck it came out of (truck was born w/a 360) thanks....also.....will tghis number tell me if its one of the HI compression 429's? thanks

 

Just above the starter on the side of the block.
You need both sets of numbers.