hey mate. as long as its roadworthy and nothing is to major it should be fine. just make sure the majors are covered
tyres, height, noise....if it has a exhaust id say go to a exhaust shop and get a baffle box made up...powatone did one for me and it cost 200 works sweet as. all lights work, horn, etc etc. also make sure everything is tight eg steering wheel, gearknob, seats dont move.
the more major obvious stuff that is roadworthy then more likely they will let small things like a aftermarket steering wheel etc pass.
i got mech work done at craighall mechanical, they changed everything over for me, then took it to ultimate tunes and it passed. i had pod still on, aftermarket gearknob.
also...dont dodgy anything up. stuff like steel wool for the noise just wont work.