Since no ones has answered the question I will 4 you
To it engineered.
(1) Brake upgrade, not sure bout the GE, but yeh GZE They would deff want you to upgrade the brakes. I would prob put some bigger ventilated brakes on the front and prob put a disc brake rear end in the back.
(2) Most engineers want the RTA emissions test - IM240 which is free
(3) Cat in your exhaust
(4) Need a unleaded fuel restrictor in the fuel filler neck
(5) Weigh bridge Certificate
(6) Stuff like wheels, ride height has to comply with the rules/bullshit, but you dont have to worry since yours is pretty stock
Yeh Ive prob forgot something, but im sure someone else can add to it.