I'm looking at a 76 Laguna 2.0 (at the pic stage right now) and see plugs fore and aft of the door sill. Car appears fairly rust free and lived a pampered life in the dreaded East and Midwest. Do the plugs have to be a bad sign? Could the longs still be in good shape? Maybe the good news is the rustproofing worked and that's why the car has not broken in half!
Paterek rustproofed my old 76 in the 80s, hid any holes, used (I believe) an oil-based ?Bosch product that seemed to work well over the years, still hasn't rusted out to this day. From what I remember, he pulled back the sail vinyl for rustproofing as well.
Other products were some kind of spray foam, no? Where else would 914's commonly have plugs?
Thanks,
Paul