thats the idea, its not a new idea, i basically ripped the idea off of some of the big horsepower, very fast fwd honda drag cars in the us, they use a similar cuff with great success. They had the same problem with gearcase breaking.
for a drag car, none tbh, i've worked out my maximum mph in 4th and its plenty..
this isn't something that got made to make money as in all honesty i only expect pete and myself to ever have one. Its been made to solve a problem for drag car gtirs. Lou has run good times without it, as have a few others. For a circuit car, trackday car its not worth worrying about, just dont launch like an ass...lol.. If however you really want to build a drag car, with a gtir, this with a straight cut gearset is probably the best you can do to try to stop the gear case exploding.
we wil see for definate next year whether it works as expected or not, if it does, happy days, it'll be time to go alot faster than has been seen yet with a gtir ;-)