It's my first post, about my first problem with my first 1986 Spider.
After removing the drain plug (per the manual) and fully draining the radiator, i noticed that the plug (bolt) would not thread back on. After closer examination (see my pictures), it appeared that it wasn't the plug that broke, it was the part of the radiator that the plug screws into that completely sheared off, with the plug still inside.
I'm wondering what options i have at this point for repair? My thought is to simply file down the broken section of the radiator, weld a nut to it, and then thread a small bolt into it with a silicone ring, but i have no experience with this and I'm not sure if it'll actually work.
Ps. I went ahead and pulled out the radiator, flushed the coolant system, including back flushing the heater core and replacing the thermostat. Thank you all in advance!