Yep, you get a far more pronounced "thunk" on gear-changes, but other thank that, no other additional NVH.
I know you said you weren't going to, but what-ever you do, do NOT change the diff bushes, as that is where you will get a pronounced whine.
Also the uprated engine and gearbox mounts will also transfer a load of NVH into the car.
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Mike R
Sarcasm is just a free service I provide.
Nordschleife, there's only two barriers to worry about - the ones on the left and the ones on the right
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CSL number 044