The offset index for layer deformation is located at the offset $00C4FC. Go there and you will see the following information:

0082 116A 02BE 116A 02F6 02F6 032E 0468 06A4 116A 076A 0830 0BCA 0D80 0E86 0FB2 10E2

You will notice that there are 17 groups of numbers, each one relevant to a level ID. The IDs are as follows:

00 - EHZ
01 - UNUSED
02 - UNUSED (WZ)
03 - UNUSED
04 - MZ (acts 1+2)
05 - MZ (acts 3+4)
06 - WFZ
07 - HTZ
08 - HPZ
09 - UNUSED
0A - OOZ
0B - MCZ
0C - CNZ
0D - CPZ
0E - DEZ
0F - ARZ
10 - SCZ

E.G. If you wanted EHZ to use ARZ layer deformation, you would replace 0082 with 0FB2