OK ive fixed my engine problem after doing a head gasket , water /oil had run down the crank sensor cable sheath & causing bad connection all sweet now . But i have another question . Whats the standard ride height ? mines had the air bags swapped for springs at some stage & is very high off the ground . Its 500mm to lip of door sills & 875 mm from ground to innersidfe of the tailgate . Im 1.85 M tall yet cant even sit on the tailgate . Is there differnt spring heights ? This is only used for road .