actually, the 1c04 codes are GS2 basecodes. Here is a sample list of codes for a Falcon XR8 hybrid in CB4:
Falcon XR8 Race Car
CB4 slot 1
CarBase 2A93B76D - BBA3D814 2A9FB76D - AC21A49D falcon_xr8_race_00
BodyColor 2A9BB76D - 0000046A 2A87B76D - 00000000 1130
brakes 2A8BB76D - 5CD7F0D1 2A77B76D - 193B9D35 Normal, mclaren_mp4_5b
brake controller 2A73B76D - 0C4827BA 2A7FB76D - B460D491 Adjustable, _3400s_00
chassis 2A7BB76D - C4FA0C0C 2A67B76D - 9FD03F16 williams_fw11
engine 2A63B76D - 60125A53 2A6FB76D - D2D03F9D Normal, griffith_500_00_ext
drivetrain & VCD 2A6BB76D - 740AB18A 2A57B76D - 2D235D01 VCD, fto_lm_race_00
transmission 2A53B76D - ACE2CA0D 2A5FB76D - 4FABA979 Full-Racing, corvette_cr5_00
suspension 2A5BB76D - F4A78B96 2A47B76D - 52B1756C Full-Racing, mrs_autobacs_00
LSD 2A43B76D - A4906AEA 2A4FB76D - 8A809495 AYC, lancer_evo7_gsr_01_ext
front tyres 2A4BB76D - 7DA695FE 2A37B76D - AE1F8B62 T5.5 Medium, williams_fw16a
rear tyres 2A33B76D - 7DA69781 2A3FB76D - AE1F8B62 T5.5 Medium, williams_fw16a
weight reduction 2A23B76D - 5EAA69DD 2A2FB76D - 6FBFE941 Stage 3, gto_tt_99
body & downforce 2A2BB76D - C1087AE9 2A17B76D - 69278040
polish 2A13B76D - 2CE9CB31 2A1FB76D - 8F52A72D Polished, griffith_500_00
balance 2A1BB76D - 30125A53 2A07B76D - D2D0339D Balanced, griffith_500_00_ext
displacement 2A03B76D - 08A84714 2A0FB76D - D6CC9FC9 Increased, mini_cooper_13i_00
computer 2A0BB76D - 64125A53 2AF7B76D - D2D03E99 Tuned, griffith_500_00_ext
NA tune 2AF3B76D - 18903551 2AFFB76D - 6C4F7138 Stage 3, opel_speedster_00
turbo 2AFBB76D - 3CEACAD4 2AE7B76D - F2BF9FA6 Stage 4, r_gt_00
flywheel 2AE3B76D - 84125A55 2AEFB76D - D2D04B9F Full-Racing, griffith_500_00_ext
clutch 2AEBB76D - 2CE8E993 2AD7B76D - 8F52A72D Triple Plate, griffith_500_00
shaft 2AD3B76D - 7E6A69DB 2ADFB76D - 6FBFE939 Carbon, gto_tt_99
muffler 2ADBB76D - 7C125A55 2AC7B76D - D2D050AD Full-Racing, griffith_500_00_ext
intercooler 2AC3B76D - 8D233516 2ACFB76D - 28A5B6F1 Racing, esprit_v8_se_00
ASM 2ACBB76E - 000030E1 2AB7B76E - 00000000
TCS 2AB3B76E - 000030E1 2ABFB76E - 00000000
wheels 2ABBB76E - 00000000 2AA7B76E - 00000000
R gear 2AA3B76E - 00000D11 3.345
1 gear 2AAFB76E - 000010EB 4.331
2 gear 2AABB76E - 00000B77 2.935
3 gear 2A97B76E - 00000868 2.152
4 gear 2A93B76E - 00000675 1.653
5 gear 2A9FB76E - 00000533 1.331
6 gear 2A9BB76E - 00000464 1.124
7 gear 2A87B76E - 0000FC19 64.537
Final Drive 2A83B76E - 0000087A 2.170
Auto gear 2A8FB76E - 0000001E 30
Of course U don't need to use all of those codes, just the ones U want. A couple rules of thumb when hybriding with a GS or CB. Always use the color code with the body code, if your using the tranny code, use the gear ratio codes with it.
NEVER SAVE YOUR GAME UNTIL YOU"VE GONE IN THE GARAGE AND TRIED THE CAR!
This code list was produced by MK's, so if U are using a PC, U can D/L it
HERE . As far as codes other than hybrid codes, or for other games,
TRY THIS . It's a bit tricky, but works pretty well once U get the hang of it.