GT2 front end is a direct bolt on to flat CF and accepts all the B4 front end parts, drop me a email if you need one Thomas.
I found with the motor location you are using you get a lot of torque steer, and you must use the B44 slipper, as the BJ4WE works like a switch and you will got loads of wheel spin.
The best option i found was to spin the motor / housing around 180 deg, then turn the rear gearbox upside down, this got rid of the torque steer, and gave even better weight distribution.
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Jonathan | Atomic-Carbon
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