Jarhead2269

hey I'm new here. I have a bone stock 02 Gt convt. All I have done to it is a short throw shifter. My friend wants to sell me a full set of Vogtland lowering springs. The only thing is they say for hard top only. Is this really a problem? And they say they lower the car 1" - 1.4", will I need to do anything else to compensate for the drop or will it be fine until I get more money saved up for more mods?