Search in the forum, i dont remember what is the name of the thread, but the info is here

I will post my offsets for wins / races for anyone interested. Not sure the effect it has on the age of the driver though. Back in an hour.

okay, here are some of my offsets:

0000ECD0 - 00 A0 00 00 00 6A 00 00 00 A0 10 01 4D 2E 48 75
0000ECE0 - 72 6C 65 79 00 00 00 00 00 00 00 00 00 00 00 00
0000ECF0 - 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0000ED00 - 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0000ED10 - 00 00 00 00 00 00 00 00 00 00 00 00 49 54 00 00
0000ED20 - 82 00 01 00 01 03 00 00 00 00 00 01 00 00 64 00
0000ED30 - 00 64 00 00 00 65 00 15 00 22 00 8E 3A AB 00 00
0000ED40 - 00 00 01 0E 00 0F 78 52 00 1E 64 58 5C 64 5A 0C

B-Spec Drivers name - looks like you can go all the way to 0000ED10 with characters - working with my save
B-Spec level of driver - working with my save - level 40 = 28 in hex value. (22 hex = 34 dec)
WINS - working with my save
RACES - working with my save
pretty sure these are your charecteristics of the driver including career - i have changed them and it works, but what does what, i dont know, i did the whole chunk but i really cant be f*cked reloading, loading, waiting, waiting for the game to load. Good luck.