in SDM, the Per-Costume Weapon/Prop Selection is stored in 3 places:
8016EDD7 
80297289
802972C8 (conducive to editing)

For whatever reason, values don't seem to match between these?
There's also an issue with VPW Studio (pre-Alpha Preview 24 and earlier) where
this value is not decoded properly in default costumes?

So let's try and figure things out.

Weapon/Prop       | 8016EDD7 | 80297289 | 802972C8 |
------------------+----------+----------+----------+
None              | 0x00     | 0x00     | 0x00
Bat               | 0x01     | 0x01     | 0x01
Sledge Hammer     | 0x02     | 0x02     | 0x02
Night Stick       | 0x03     | 0x03     | 0x03
Barbed Wire 2x4   | 0x04     | 0x04     | 0x04
2x4               | 0x05     | 0x05     | 0x05
Kendo Stick       | 0x06     | 0x06     | 0x06
------------------+----------+----------+----------+
Pool Cue          | N/A      | 0x07     | 0x07
------------------+----------+----------+----------+
Microphone        | 0x07     | 0x08     | 0x08
Head              | 0x08     | 0x09     | 0x09
Water Bottle      | 0x09     | 0x0A     | 0x0A
Roses             | 0x0A     | 0x0B     | 0x0B
------------------+----------+----------+----------+
Chair             | N/A      | 0x0C     | 0x0C
Table             | N/A      | 0x0D     | 0x0D
Cheesehead        | N/A      | 0x0E     | 0x0E
Briefcase         | N/A      | 0x0F     | 0x0F
Austin Finger     | N/A      | 0x10     | 0x10
Rock Bull Head    | N/A      | 0x11     | 0x11
Stop Sign         | N/A      | 0x12     | 0x12
Garbage Can       | N/A      | 0x13     | 0x13
Ring Steps        | N/A      | 0x14     | 0x14
Steveweiser       | N/A      | 0x15     | 0x15
The Rock Says     | N/A      | 0x16     | 0x16
Title Belt        | N/A      | 0x17     | 0x17
Ring Bell         | N/A      | 0x18     | 0x18
Fire Extinguisher | N/A      | 0x19     | 0x19
Ladder????        | N/A      | 0x1A     | 0x1A
------------------+----------+----------+----------+
Cane              | 0x0B     | 0x1B     | 0x1B
Bazooka           | 0x0C     | 0x1C     | 0x1C
Goblet            | 0x0D     | 0x1D     | 0x1D
Scales            | 0x0E     | 0x1E     | 0x1E
------------------+----------+----------+----------+


FIRE? 0x20