New Zealand are confident of winning the NatWest Series after their stunning victory in the third match at Bristol on Saturday.
The tourists claimed a 22-run success to level the series at 1-1 despite mustering just 182 with the bat.
A superb bowling performance - led by Tim Southee's four wickets - saw England collapse to 160 all out in reply.
That leaves things evenly poised heading into the fourth game at the Oval on Wednesday, with Black Caps seamer Kyle Mills believing his side can ride the momentum of their Bristol win to a series triumph.
"Can we finish the job off now? I think so," said Mills. "We've got the momentum heading to London for the final two matches.
"It would be nice to salvage something positive from the end of the tour.
"But the important thing is we have to train even harder over the next couple of days because we know England are going to fight back pretty hard.
"We have to build on Saturday's win and it is going to be a great end to the series."
Mills has faith in the Kiwis' one-day line-up but believes a series win over England would act as a great fillip to the young members of the squad.
"We are a very good one-day side and we've got a few young guys in the team," he added.
"Once they get experience under their belts, and if can achieve a series win against England, it will bode very well for the New Zealand side."
New Zealand could welcome back Jacob Oram on Wednesday, although it is likely to be as a batsman only. The all-rounder has yet to feature in the series due to a hamstring strain.