Spring Relocation Question

I'm ordering a spring relocation kit from the car farm but am not sure which hole size to order, 1/2" or 5/8". I'm losing the springs and will be installing an RMS Street Lynx some time next year. Any idea which hole size to go for? Thanks for the help.
I believe that your original type springs use 1/2" bolts. The Super Stock and XHD springs use 5/8".