I have a Craftsman Model 919-152811 which also uses the ACG-402 valve plate assy. I used this thread to order part needed for my compressor and realized a couple of things that I think may help others that may find this info useful.
As described above the Z-AC-0032 valve plate assy's can be used to replace the ACG-402 part, but either new heads will need to be purchased, or modifications to the heads will be required,
starting with the new heads, part numbers AC-0784 and AC-0805 are heads for a 2 stage air compressor. I purchased these and they were not the proper heads for my single stage compressor. As I look through the different compressor models on ereplacementparts.com/
it would appear the AC-0037 and AC-0038 are the single stage heads that will work with my compressor.
Now as mentioned before the Z-AC-0032 is a much better valve plate design. it has a contoured plate that accompanies the reed valves that will eliminate the stress on the valves which causes them to break. There are 2 problems with simply using the valve plates. 1) the contoured reed valve plate runs interference with the read valve stops in the heads, and 2) the D-shaped o-ring channel is casted in both the heads and the new plate assy.
One thing that has to be done (not the first thing) if you are going to reuse the heads with the new valve plates is to machine 1/4" reliefs into the reed valve stops of each of the heads. I suggest a die grinder, so I hope you have a friend who also has a compressor.
Now, a decision has to be made; transfer both sets of reed valves from the new plate to the old plate, or use the new valve assemblies as they are. If you transfer the reed valves, you need only to machine the reliefs. If you choose to use the new valve assy's, you will need to fill in the D-shape o-ring channel on the head. I welded and machined mine, but I would expect JB weld would work fine, followed by the reliefs.
I hope this was helpful.