Using this calculator:
http://www.scs.ryerson.ca/~c5tam/aspdcalc/And the data presented, I'm getting 184 ASPD (so that's official mechanics)
and on the test server both 3ceam and eAthena I get 179 ASPD
odds are that the ASPD formula is different then yes.
If you still want to test as if you had 184 ASPD, but don't want to change your AGI.. you can make a lower headgear that provides ASPD you can @item2 this:
@item2 2219 1 1 0 0 1814 0 0 0
It's a flu mask with a berserk claw (bAspdrate = 12) so you end up with 184 without changing AGI