10800 is NEVER USABLE in a street car.
Starting at 6000rpm to get your turbo and engine working simply makes it a DOG.
This car would be a TOTAL TURD to drive on the road
4" exhaust, peripheral port and GT4202R with a 13B = nightmare
So to race someone on the street your would need to hold 5000rpm???? before you mash the gas????????????? LOL, Nice job on the syncro's changing from 10800rpm in 1st to 2nd gear LOL......... this just makes no sense and will NEVER EVER work in reality on the street.
That car would have RINGS RUN AROUND IT by a car fitted with a conventional engine and non horse cock inlet manifold and a much smaller turbo
The onus is on YOU! to back up the worthless dyno sheets with some real world acceleration figures PROVING how fast this car is................. for as it stands it is nothing more than a dyno queen as it is.
And based on your other customers car it would make for a pretty slow drag car since its only fitted with on OEM gearbox. So I for one just do NOT get the point of it AT ALL! But I am a reality person not a fictional person who shits on about torque under the curve, when it has no practical application and is NOT backed up by any factual results that set it heads and shoulders above what is a far more logical and simple proven set up.
If you want praise for building a dyno queen, congrats 
if you want respect for building a fast true street car show us all the power on 93 octane and show us the performance with a legitimate test.