About the best you could do with that quaife gearset is use the 1st gear and the lowest final drive they offer. I don't know if its possible to mix and match gears like that. I'm not a gearbox guru. Of course, you still have to deal with traction in 2nd and 3rd gear (maybe 4th gear depending on power and powertrain setup) since the rest of the quaife gears are not really much of an improvement over stock.
Don't get me wrong, it will certainly help, but I don't think its enough to put someone into the 12s. Throwing in a quaife gearset is not going to magically put 350-400 whp to the ground. :laugh: