Just passed my 15yr old 180 through regency a couple weeks ago, luckily the car came in fairly stock except wheels, exhaust (was quiet enough), coilovers and a couple other little bits. took all of them off (except exhaust) and put stock bits on (borrowed) just in case. Rory Thompson Services (ph. 8252 9506) did my intrusion bars and unleaded fuel filler neck insert, he took 3 days and was much cheaper than anyone else. We installed retractable rear seatbelts ourselves and child restraint bolsters, in teh end it all wasnt too difficult, just spare yourself a week or so to get it all sorted (depending on how available you are). Its obviously an 89 model your bringing in so you have to remeber to get the new vin no. that regency specify stamped onto the chassis (put mine on right strut tower) also...
remember to check your chassis rails for damage
fix ANY leaks in teh engine bay
clean the underbody just so it looks nicer for the inspector
fix any rust
take out the sun-visors (regency prefer none over the jap ones)
drivers side mirror (change from convex to flat)
dont let someone charge you 300 to install retractable rear seat belts... do it yourself for 50 or so (pick up some 2nd hand ones off another r32 and install em urself)
make sure ALL of your lights work, and your heater and defogger vents up front work.
check your brakes
ummm... i think thats about it, oh and any aftermarket steering wheel or gearknob change for stock, and yes they will ping you on your BOV, the pod maaybe ok, depending on how secure it is, if u can get a hold of the stock airbox, chuck it on.
if u have any other query's, PM me or post here.
Hope this helps
Aussie