ICHIBA Version II wheel spacers, front??

NS370Z

Hi. Fairly new to the Z scene. Ordered a set of ICHIBA Version ll wheel spacers for my 2012 370Z with sport package. I went with 20mm all around but now I'm having second thoughts about installing them. I thought they were just bolt up with no hassles now I find out there is this special bolt on the front that prevents the accidental swithching of wheels. Sorry for the dumb *** question but I'm guessing you have to remove that bolt or tab?? How hard is it to remove? Maybe I'll just put 20mm on the rear? Anyone notice any significant handling concerns once installed, good or bad? I really didn't want to go hacking my 3 week old car, might have to sell the spacers if it has to be cut off. Thanks.