hey guys just want to clear up a suspension query between class 4 and class 5.  been looking at cams manual and was wondering about a few things....

is class 5 free in suspension design or is it held by maufacturer desgins?  what i mean is can you widen the track, fit coilover rearend etc (i understand that you are controlled by having to run the full chassis as standard)

what is free? do you need a floor in the tub (if running a ute), or can you remove it? (so you can mount longer shocks etc)

can you fit a suspension system like total chaos, or jd fabrications on the front ( of the shelf kits that widen the track about 6" per side and give you around 17" front travel)  even though you need to add a new sub-structure to the front for the lower control arms.

i was just curious, any help would be good

luke