laser A3

i found this website which sells sum adaptor for the A3, if you already dont know u cant fit a gear **** on the a3 unless u put it on the metal bit it self which means u have to have it pushed down so it can engage in reverse, i found this adaptor thing on a website in america but i dont know if it will let me put a gear **** on my a3, does nyone know about ny adaptors or about this one? http://www.lltek.com/images/cockpit/knob_shift_extnsion_SRL0023_YZ.jpg