"We have almost the same team, with Junior Tatana coming in for Malcolm Wells, so only one change and all the boys are confident after last year.
"You always want to go back-to-back at a tournament like this.
"We'll be going out there with one thing in mind: to win it again.
"The course is playing hard and fast and the greens are great."
Munn is joined by Levin's Tyler Hodge, both having been in the New Zealand team who came runner-up at the inaugural Ten Nations Cup in South Africa.
The tournament is today and tomorrow with 36 holes played each day. It is an amateur trophy as it is deemed a national amateur teams event.
Manawatu Wanganui team is: Josh Munn, Tyler Hodge, Trent Munn, Lachie McDonald, Junior Tatana.