I previously owned a M6 6TH Gen Camaro SS and although i miss banging gears i bought the A10 5.0 because of its overall potential and i drag race alot and i like winning i think its hard for the manual shift fans to let go and admit stick shift cars are no longer dominant in the racing world now this is just my opinion
I had occasional high rpm (full throttle) shifting issues on my T56 (2000 Camaro Z28), even with a Hurst shifter. Not common, but occasional. But the shifter was direct and did have a little vibration at idle. Didn't bother me.My MGW on the 15GT was a huge upgrade and that took it off the body and onto the trans.
The trans moves from torque when you're giving it the beans and alignment changes causing lockout and grinding. MGW solved that. NVH was not noticeable.