United trailed 1-0 and 2-1 to the Minstermen – but eventually won 3-2 courtesy of a Luke Horne brace.
Taylor Jaine had fired United’s second leveller before the break.
Boston: Cameron Fox, Ellis Perry-Burdett, Josh Doran, Will Langford, Taylor Jaine (Finley Ging 67), Charlie Brooks, Jake Henderson (Lucas Turrell 67), Kris Zaluzinskis, Luke Horne (Joe Wilkinson 90), Hugo Hunt (Oliver Fields 80), JJ Ward (Nathan Bowen 22).
Referee: Trevor Basker.