Leiston manager Mark Morsley says his side will approach their FA Cup clash against Dartford with attacking intent.
The Blues, who play three tiers below Dartford, secured Tuesday's fourth-qualifying round replay, following their goalless draw at Victory Road.
Morsley told BBC Radio Suffolk: "I don't believe we can go out and try and defend and nick the game on penalties.
"I think we go and play expansive football. We might tweak a few things here and there."
The winners will host League Two's Port Vale in the first-round proper.
Leiston's best showing in the FA Cup came three seasons ago, going out to Fleetwood Town in a first-round replay.
Morsley, who has previously managed AFC Sudbury, senses his Ridgeons Premier League side may be able to cause an upset at Princes Park.
"It's a fantastic facility there, there'll be 1,500 people there, it will be a big night for Dartford," he added
"But it will be another great day and another great occasion for the club.
"Fair play to Dartford, they probably feel they've done the right job.
"They came to us and got a draw and now fancy themselves at home, but never write my teams off."
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