The All Gold does not give any prize cars, The only gold codes that do give the prize cars are the ones for Licenses and Mission Hall. You will have to run the races yourself to get the prize cars. I have a shortened version of the License and Mission Hall Codes:
PAL Gran Turismo 4
(M)
4TNN-CVCV-VJ23P
6VZ2-3FMN-KZX25
FHFP-AR44-FW7C8
B License
ZMW7-7MFB-HXC6D
6UWG-Q9E7-249KV
3H5J-UBQP-7T3DC
A License
TDBE-93U8-0BP4U
VEXQ-ERN9-VG2XD
3H5J-UBQP-7T3DC
IB License
9UD3-F6NC-MBBNV
8BHW-NK6D-XDA3W
3H5J-UBQP-7T3DC
IA License
NWVG-NV55-JVMN2
70Q0-7TE7-72T0J
3H5J-UBQP-7T3DC
S License
J6PN-AB32-GF8UZ
H2AU-A2VG-2A3AD
3H5J-UBQP-7T3DC
Mission Hall
KK3Q-RK43-T6DEP
AT5F-CFN6-1ZRKK
E8YY-JHQX-68W87
