I'm not sure how this mod would affect the driveshafts? Apart from possibly putting slightly less load due to the weight saving.
The only things I can think of that would affect drive shafts are
-Increase in engine power/torque
-Change of gear ratios
-Change of ride height
The flywheel and clutch mod doesn't do any of these apart from possibly transferring more power/torque into the gearbox in certain situations due to less slippage.
