I've done some further investigation and think I may have found the issue.
At the root of the C: drive is a folder $ that contains the contents of the
i386\$oem$ folder from the install share and there is no trace of the
drivers in C:\$WIN_NT$.~LS
Volume in drive C is
Volume Serial Number is 20EC-E8CE
Directory of C:\
NETINST 08-28-03 4:39p
$WIN_NT$ ~BT 08-28-03 4:40p
TXTSETUP SIF 359,308 07-24-02 5:00a
$LDR$ 229,792 07-24-02 5:00a
NTDETECT COM34,724 07-24-02 5:00a
NTLDR 214,432 07-24-02 5:00a
$WIN_NT$ ~LS 08-28-03 4:40p
$ 08-28-03 4:58p
8 file(s)838,256 bytes
Directory of C:\$
. 08-28-03 4:58p
..08-28-03 4:58p
$108-28-03 4:58p
TEXTMODE 08-28-03 4:58p
4 file(s) 0 bytes
Directory of C:\$\$1
. 08-28-03 4:58p
..08-28-03 4:58p
CP002876 08-28-03 4:58p
CP002921 08-28-03 4:58p
4 file(s) 0 bytes
Directory of C:\$\$1\CP002876
. 08-28-03 4:58p
..08-28-03 4:58p
CP002876 XML33,656 01-03-03 2:04p
CPQSETUP EXE 126,976 09-27-02 10:03a
GENERIC DLL 245,760 11-02-01 10:54a
INSTALL XML 174 09-21-01 9:53a
Q57W2K CAT 8,212 01-23-03 9:45a
Q57W2K INF15,266 12-12-02 3:19p
Q57W2K SYS79,336 01-15-03 9:11a
9 file(s)509,380 bytes
Directory of C:\$\$1\CP002921
. 08-28-03 4:58p
..08-28-03 4:58p
CP002921 XML54,634 01-21-03 10:38a
CPQCISS DLL 249,856 04-15-02 2:19p
CPQCISSE CAT 8,132 01-21-03 8:42a
CPQCISSE INF 2,385 12-09-02 8:55p
CPQCISSE SYS67,056 12-09-02 8:55p
CPQCISSM CAT 8,559 01-21-03 8:42a
CPQCISSM DLL46,352 12-17-02 7:32a
CPQCISSM INF 3,118 12-09-02 8:55p
CPQCISSM SYS15,568 12-09-02 8:55p
CPQSETUP EXE 126,976 09-27-02 10:03a
INSTALL XML 176 12-04-00 3:25p
README TXT 2,902 03-05-01 2:55p
TXTSETUP OEM 772 12-09-02 8:55p
15 file(s)586,486 bytes
Directory of C:\$\TEXTMODE
. 08-28-03 4:58p
..08-28-03 4:58p
CPQCISSM CAT 8,559 01-21-03 8:42a
CPQCISSM DLL46,352 12-17-02 7:32a
CPQCISSM INF 3,118 12-09-02 8:55p
CPQCISSM SYS15,568 12-09-02 8:55p
TXTSETUP OEM 774 08-27-03 12:55p
7 file(s) 74,371 bytes
Directory of C:\$WIN_NT$.~BT
. 08-28-03 4:40p
..08-28-03 4:40p
BOOTSECT DAT 512 08-28-03 4:40p
SYSTEM32 08-28-03 4:40p
DISK104 3 07-24-02 5:00a
FLPYDISK SY_10,975 07-24-02 5:00a
CLASSPNP SY_19,761 07-24-02 5:00a
CLASS2 SY_ 7,669 07-24-02 5:00a
...
$OEM$ 08-28-03 4:40p
111 file(s) 4,115,336 bytes
Directory of C:\$WIN_NT$.~BT\$OEM$
. 08-28-03 4:40p
..08-28-03 4:40p
TXTSETUP OEM 774 08-27-03 12:55p
CPQCISSM INF 3,118 12-09-02 8:55p
CPQCISSM CAT 8,559 01-21-03 8:42a
CPQCISSM SYS15,568 12-09-02 8:55p
CPQCISSM DLL46,352 12-17-02 7:32a
7 file(s) 74,371 bytes
Directory of C:\$WIN_NT$.~BT\SYSTEM32
. 08-28-03 4:40p
..08-28-03 4:40p
NTDLLDLL 490,768 07-24-02 5:00a
SMSS EXE 152,336 07-24-02 5:00a
4 file(s)643,104 bytes
Directory of C:\$WIN_NT$.~LS
. 08-28-03 4:40p
..08-28-03 4:40p
I386 08-28-03 4:40p
SIZE SIF 288 08-28-03 4:58p
4 file(s)288 bytes
Directory of C:\$WIN_NT$.~LS\I386
. 08-28-03 4:40p
..08-28-03 4:40p
SYSTEM32 08-28-03 4:40p
_DEFAULT PI_ 331 07-24-02 5:00a
0401 CS_ 4,965 07-24-02 5:00a
0404 CS_ 4,879 07-24-02 5:00a
0405 CS_ 5,127 07-24-02 5:00a
...
WKSTAMIG IN_ 5,045 07-24-02 5:00a
MDMRPCI IN_ 1,374 07-24-02 5:00a
UNIPROC 08-28-03 4:58p
4,678 file(s)254,556,644 bytes
Directory of C:\$WIN_NT$.~LS\I386\SYSTEM32
. 08-28-03 4:40p
..08-28-03 4:40p
SMSS EXE 152,336 07-24-02 5:00a
NTDLLDLL 490,768 07-24-02 5:00a
4 file(s)643,104 bytes
Directory of C:\$WIN_NT$.~LS\I386\UNIPROC
. 08-28-03 4:58p
..08-28-03 4:58p
KERNEL32 DL_ 240,449 07-24-02 5:00a
MP2UPCAT 9,469 07-24-02 5:00a
MP2UPINF 1,597 07-24-02 5:00a
NTDLL