[Fot] GT6 transmission

[damys at charter.net]

Looking for advice on a transmission upgrade for the GT6.  I've spoken 
with Quantum Mechanics and they offer four options.  Standard GT6 box, 
upgraded GT6 box with TR7 gears, a TR6 trans mod and the T9 option.  My 
fear with the GT6 option is the constant rebuilding, although I 
understand it offers the best ratios.  The best seems to be the T9, but 
$3400 is a lot especially considering the other costs of building a 
racecar from the ground up
If the T9 is the best, would it be a sound move to go with a lower diff 
ratio to be able to utilize 5th gear, or stick with the 3.27:1.
Thanks
Dave and Alex