> I believe it's short for Gonna EXplode.

Exactly ! Everybody's lucky who doesn't know. GEX was / is (?) an L.A. based
VW engine remanufacturer - even their home page is bad, i.e. not reachable
right now (code red ? thanks !).
Michael, Germany
80 Westy w/GEX disassembled completely + fixed
86 GL
86 Quantum