Hi, my 2008 GU Patrol ZD30 needs a new clutch, so I want to install a new clutch kit either 4 terrain heavy duty solid mass flywheel or excedy safari tuff as I tow campertrailer. The question I have is that I'am led to believe that I must pull out the gearbox to determine whitch type of dual mass flywheel is in it. Is there a way to find this info out without taking the gearbox out. Thankyou.