Depends on how good the drivers are and the condition of both cars... I think from memory they TX3 is 100kW at the fly, where as our car is 106kW at the fly... we have a heavier car, but a fair bit more torque.
So after all that, I'd say you will jump out in front by about a car length and hold it for the entire race. Spend about $1000 on your car though and you'll give that naughty TX3 a spanking....
Tripharn