actually, compared to drilling, the clips creates more damage to yr hood.. as downforce will push these clips to actually 'eat' into the steel of the hood after it has chew thru the paints...hence, u got a 'larger' surface area exposed to rust...
I'm seeking for best missfire sytem for my r33.. but can't find much info about it..
I've heard about FireStar, with a funtion to control max rev.. but no one sell it at my area...