Just figured I would post this since I wasn't aware of it before but the e30 does actually have a stock application for Triple Square sockets (12pt Allen or Serated)
To remove / install the fittings on the automatic trans you need a 10mm triple square or 12mm triple square depending on if it has the early ball style fittings or the later O-ring style line fittings.
In my case to put a late auto tranny in an early auto car I needed both to reuse the early style lines
Also triple square sockets are available at Napa and CarQuest if your not near a snap on truck
To remove / install the fittings on the automatic trans you need a 10mm triple square or 12mm triple square depending on if it has the early ball style fittings or the later O-ring style line fittings.
In my case to put a late auto tranny in an early auto car I needed both to reuse the early style lines
Also triple square sockets are available at Napa and CarQuest if your not near a snap on truck