late model body style came out in 88, albeit with aluminum bumpers still, however the swap to plastic bumpers is fairly straightforward. Airbags began appearing in 90, i believe, and yes, they are pretty pointless. The best year for the 325is is 89, as it had the plastic bumpers, no airbag, and ellipsoid headlights. You are pretty lucky in the us, as the e30s tend to be fairly cheap ie under 5000 usd, here in canada a late model 325is in good condition will go for over 10000 cdn. Good luck on finding a car, you wont regret buying an e30!