Wales second-row Will James plans to make an impact against England on 4 August after his shock squad call-up.
James has made an impact since joining Gloucester last year
The Twickenham game is the only Test Wales have before their 41-man summer squad is cut to 30 for the World Cup.
"It would be fantastic to get a chance at Twickenham," said James, who played there for Gloucester in May's Guinness Premiership final loss to Leicester.
"I'll just be trying to do my best this summer and - like everyone else in the squad - trying to make the final 30."
The chance has come quite late in my career, but when an oportunity arrives you must make the best of it
Uncapped hard-man James, 30, stands at 6ft 5ins and 19st and has a rugged reputation, being known by the nick-name 'Bull'.
Born in Plymouth, he qualifies for Wales through parentage and was capped by Wales A in 2000.
He joined Gloucester from the Pirates last year, making 18 appearances this season, having had previous spells at Pontypool, Pontypridd, Cornish Pirates and Plymouth.
"There were times when I felt that I'd fallen off the international radar, but you have to be playing at the highest domestic level and that was foremost in my thoughts," said James, whose squad inclusion ahead of Brent Cockbain was a major surprise.
"The first I knew of any interest from Wales was when I was put on stand-by for this summer's tour to Australia.
"When I didn't make it out there I thought that was it before the World Cup, so I was obviously over the moon with the call-up, it's a great feeling.
"The chance has come quite late in my career, but when an oportunity arrives you must make the best of it.
"Gloucester is a great place to play, their style suits me and has helped my progress.
"I like to run with the ball in hand, get around the park, get stuck in, and basically do a good second row's job.
"Some of the Wales guys will be familiar from my time at Pontypridd. There's a lot of talent in the squad, and I'm looking forward to learning from them."
We're looking for different qualities, dynamic ball carriers and players who can be aggressive defensively
Wales coach Gareth Jenkins
Wales coach Gareth Jenkins suggested that James could contribute in areas where he had found Cockbain lacking.
"We have concerns about our line-out, and that has to be a key area for us," said Jenkins.
"But we feel that we've picked a group of forwards who can deliver there.
"We're looking for different qualities, and dynamic ball carriers and players who can be aggressive defensively are to the fore.
"Will shows those qualities at Gloucester, and we need to see if he can deliver in the international environment.
"Brent has arguably not developed back to the form he showed in the 2005 Grand Slam.
"He's not playing badly, but maybe it's time to look at other options.
"We can only pick 30 players for the World Cup and that means we will need flexibility in our selection options."