Car was owned by an old man in Florida up till 45,000 miles. At that point a good buddy of mine (who is also now our head technician) bought it.
He DD'd the car. (when weather was nice)
Never made a single 1/4 mile pass.
When the car had about 62k miles on it some asshole put sugar in the gas tank that caused a failure. Instead of replacing the motor with stock (insurance paid) he had it built. The next 10k miles he continued to DD the car when the weather was nice. Car hasn't ever made a SINGLE 1/4 mile pass. It has had very few launches at all (verified through ecutek) Aside from the occasional highway pull against me, the car wasn't ever raced.
On to the trans. It's IVEY trans.. not a Shep trans. So the numbers are a little different. An Ivey 1.5+ is equal to a Shep stage 3. For reference, about a dozen cars have went DEEP 8s on an Ivey 1.5+ (same trans as this car)
[if you are comparing it to a Jacks trans... well they ALL suck]
At this point, the car is very over built. You would be more likely to experience a failure at full bolt on level, than you would with this car. Trans is also smoother than stock.
Have you driven any 1000hp (crank) GTRs built at a reputable shop? They are nothing like 1000hp built anything else. The cars lose zero driveability. They usually end up running smoother than stock.