Ebbsfleet United booked a trip to Wembley in May with a gutsy FA Trophy semi-final victory over Conference leaders Aldershot.
After doing the hard work with their 3-1 first-leg victory a week ago, Ebbsfleet were given an uncomfortable final half hour in this second leg.
Junior Mendes halved their advantage with his 61st minute goal.
But defender Michael Bostwick levelled in the final minute to end any doubt and book a meeting with Torquay United.
Aldershot manager Gary Waddock told BBC Southern Counties Radio: "I'm bitterly disappointed, but we can't complain because the performance in the first half of the first leg cost us the tie.
"We can use this experience to our advantage because I don't want to be feeling like this at the end of April.
"I know what we all want to achieve. I know what the club wants. I know what the players, staff and fans want, and we've got 11 cup finals to go to achieve that."
While Aldershot remain nailed on for the Conference title rivals, Torquay still have a chance of a promotion/Trophy double.
Torquay, who like Ebbsfleet had also opened up a two-goal first-leg lead on home soil, kept their nerve despite losing 1-0 to York City on the day at Bootham Crescent, only to go through 2-1 on aggregate.
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