that sucks dude, but like everyone has said just return the car back to stock form other then the fmic and pod.
tyer placard would be on the car somewhere and you should have showed him, besides, cops have books with all that info init. should have told him to get off his ass and look it up.
DONT try and pass with a PFC computer, not worth the hassle and your car will be fine running the standard ecu.
coilover will deffently NOT pass. dont use aftermarket sus at all as they will be very picking on it and if they dont know much about the brand they will ask you to change to stock.
also, even though your rims are legal. i never take the chance for them to do me for some load rate reason or something stupid like that. stockies are always the best bet or a set of 17's that arent as wide.
marky at ET can do a rental exhaust system for you or spot weld a silencer and remove it after for a small fee if your not to confident on DB limit.
i always like to take no chances with regency though so its up to you, im realy fussy about it.
might see you at regency dude, im defected aswell and sorry for the noval haha