Guys there is an excellent simulator (you may find what you need there)
in the following page:
www.cartest2000.com
You can find the program in two versions:
Dos: http://home.earthlink.net/~patglenn/ct.html and click on the CarTest4.5
or
Windows: cick on DEMO at the home page (this requires the java 2 runtime environment which you can download from a link at the same page)
If I remember correctly the DOS (DEMO) version allowed a lot of fiddling with the values.
Although it may not give you an estimated power/torque figures (I am not sure) it gives you acceleration times, comparison with other cars (1/4 miles ...), suggests best way to use the clutch for standing starts ...
I don't know how accurate it is but I consider it as a great effort !
Hope you find it useful and enjoy using it (as I did).
Alex.