Makes sense that the extended warranty to 7 years is relatively inexpensive, as you kept the limited milage figure the same. No miles, no wear & tear or opportunity to have even electronics go down.
You would be well advised to speak with a racing transmission specialist. Giving “him” the numbers, such as horsepower, gear ratios, of the transmission type and differential, motor redline, weight of the car, cam specs such as duration & lift are critical, and importantly, what style of...