lol ur scared of miss fires and knocking.. well a STD sidemount im sure will incur more knocking than a FMIC due to the higher intake temps.
if ur soo concerned why dnt u just buy supporting mods, split dump, gauges, FMIC, CAI, steel wheel turbo, splitfires.u own a R33 GTST ur gonna get knocks and rattles and everything. forget about having a smooth life with the car.