I just finished the upgrade mod to the MS3 stock mount. I'd say there are zero drawbacks to this mod, and the improvements are well worth the price. I was concerned that it would increase vibrations at idle, but I feel no difference. The throttle and clutch are much more mechanically involving now than with the mushy stock mount.
Hatch Nation #90
'12 SE Sport 5Dr |╠╬╝|Sterling Grey Metallic|203a|Moonroof|17" Paint/Mach Whls|K&N 57S-4000|FFE RMM|Steeda STB, RSB|JBR bushings
'01 ZX3|╠╬╝|Pitch Black|Prem. pkg.|Moonroof|SVT Snorkel|SVT Springs|S2 Dampers|Steeda STS|Magnaflow exh.