Well looks like they beat me too it, i was gonna say subframe connectors, definately get them welded, also, dont convrtibles have a thicker swaybar? well if you get the sub connectors, pull that bar (front), watch your traction change like night and day!

let us know how it goes.
If you like handling though, go ahead and leave it on, cuz that vert will probaly handle like crap, but i think mine is fine without it.