Hey I have never installed a motor -SBC in a G-body before , I see on my elcamino the frame -crossmember has a cage with a rubber isolator insert. But I do not get what I need on the motor side. I have full size chevy truck engine side mounts witch are just a metal bracket but is this all i need ? is there a second rubber between the cage and top metal piece ? the truck motor side mount looks tall for a car is this the right piece ? Help Joel