Need a copy of Trans-Go's installation instructions..

IIRC manual valve bodies have the passages fully open because the shift control is done inside the valve body. But - you will also need the acumulator spring or a blocking rod depending on the level of shift kit the auto shift one has.
But - If you look up into the case where the fluid passages are at the front of the pan... There could be a plug or restrictor in a passage there too so it's worth a look. Also again, you may need to install a plug/restrictor into a passage there too depending on the level of performance of the kit you have.