I'll take a shot at this. All the information is from "How to Rebuild Ford V8 Engines" by Tom Monroe - none from my head.
Block D2AE-CA date 1-L-29 Can be a 4 bolt main in a Boss, CJ or it can be a regular 2 bolt main block. The problem is that someone could convert it. I don't know about the date code.
Rods DOAZ-A (They are marked DOAE-A on the beam) - The rods in all 351C engines are the same. The Boss and HO rods got high-strength bolts and nuts and got magnafluxed by the factory to make sure there were no cracks.
Crank D1ZX-AA The crank should have a 4M or 4MA casting number on it. All 351C cranks are the same, except Boss and HO cranks were inspected for Brinell hardness - there will be a spherical indentation about 1/8 inch wide in the front or rear face of one crankshaft counterweight. The tested area is also ground smooth.
Balancer D2AE-6316-B24 - I don't know.
Heads D1AE date OM7 and OM15 - Listed in the book as 2V heads. The book must be wrong as I'm sure you can tell the difference. My book says the Boss heads have a 66.1 cc chamber and the HO heads have a 75.4 chamber. Of course both are also machined for screw in studs and guideplates.
Exhaust Manifolds DOAE-9431-G date 9H26 / DOAE-9430-G date OL11 - I can't tell you.
I hope this is some help to you.
Edit: oh another difference between the Boss and HO motors besides the head volume is the piston. Both got forged pistons. The Boss got a pop-up piston to give 11.3:1 compression. The HO was a low compression version of the Boss that used a forged flat top 9.2:1 piston that is similar in appearance to the regular cast 351C flat top piston.