Look in fastlane under air intake for your '83. The parts to get are the turbo drain grommet and 2 turbo drain o-seals. I always get the turbo drain gasket too just in case I can not get the drain line loose at the pan when I do this job. This is the gasket at the top of the drain tube/bottom of the turbo. It's held in place with 2 bolts. Fastlanes prices are low for these items.
I did not see the o-seals for the air filter drain line. A couple years ago I bought a metric o-seal assortment that comes in a clear plastic case for about $8 from Harbour Freight. I believe the o-seals are buna-n and they usually last as long as OEM seals. Sure wish I could find some viton o-seals in metric sizes. They hold up a long time and have a much greater operating temperature range.