Id be modding up before you take a run with your old man. You have him on weight... but thats it.
Benz C32 AMG
Horsepower: 349 hp
Torque: 332 ft-lbs.
Acceleration (0-60 mph): 5.4 sec
Curb Weight: 3540 lbs.
The 0-60 time you have is inaccurate I happen to own one of these cars and know them very well the best recorded time for 0-60 by road and track was 4.5 sec!!
As for the race...don't waste your gas...
ZZP 3.1 MPS, 2.5" catless exhaust, TOG's, XP hot cam, 105# springs and mod'd retainers, ZZP pcm, alt voltage booster, Wizaired intake, heads lightly ported and 3 angle valve job, PRJ 10.4's, ummm