INDIANAPOLIS -- The start of training camp is still more than three months away, leaving plenty of opportunities for things to change for the Indianapolis Colts. But they finished up their heavy lifting in free agency when they signed former Atlanta Falcons safety Dwight Lowery on April 3.

Let’s take a look at how the starting offensive unit could look in Week 1, depending on position battles and health.

2014 OFFENSE

Total: 3rd

Pass: 1st

Run: 22nd

Strength: Passing game

Weakness: Running game and offensive line

2015 PROJECTED OFFENSE

Quarterback: Andrew Luck

How acquired: First round, 2012 draft

2014 stats: 380 completions, 616 attempts, 4,761 yards, 40 touchdowns, 16 interceptions

Note: Luck led the NFL in touchdown passes and was third in passing yards last season. He’ll likely have his best offensive supporting cast next season.

The Colts hope that veteran running back Frank Gore can give them the consistent running game that they've been lacking in recent seasons. Ezra Shaw/Getty Images

Running back: Frank Gore

How acquired: Free agent, 2015

2014 stats: 255 attempts, 1,106 yards, 4 touchdowns

Note: Gore, unlike Trent Richardson, should be a solid complement to Luck in the backfield. Gore has rushed for at least 1,000 yards in eight of his 10 NFL seasons.

Receiver: T.Y. Hilton

How acquired: Third round, 2012 draft

2014 stats: 82 receptions, 1,345 yards, 7 touchdowns

Note: Hilton is Luck’s No. 1 target. He finished sixth in the league in receiving yards and yards per reception.

Receiver: Andre Johnson

How acquired: Free agent, 2015

2014 stats: 85 receptions, 936 yards, 3 touchdowns

Note: Johnson's 936 yards receiving last season in Houston would have been good enough for second on the Colts. He'll be a nice underneath target for Luck.

Tight end: Coby Fleener

How acquired: Second round, 2012 draft

2014 stats: 51 receptions, 774 yards, 8 touchdowns

Note: Fleener had the best season of his three-year career last season. He improved his blocking skills. He still has to avoid careless drops.

Tight end: Dwayne Allen

How acquired: Third round, 2012 draft

2014 stats: 29 receptions, 395 yards, 8 touchdowns

Note: Allen is a better all-around tight end than Fleener, but injuries continue to slow him down. Allen has missed 18 games over the past two seasons.

Left tackle: Anthony Castonzo

How acquired: First round, 2011 draft

Note: Castonzo was the only offensive linemen to start every game last season while protecting Luck’s blindside.

Left guard: Jack Mewhort

How acquired: Second round, 2014 draft

Note: Mewhort has cemented his spot as a starter for years to come after starting all 14 games he appeared in as a rookie.

Center: Khaled Holmes

How acquired: Fourth round, 2013 draft

Note: Despite Holmes starting the final five games of the season, coach Chuck Pagano said there will be a competition between Holmes and Jonotthan Harrison for the starting spot next season.

Right guard: Todd Herremans

How acquired: Free agent, 2015

Note: Herremans has the inside track to start, but keep an eye on Hugh Thornton, who the Colts haven’t given up on despite his inconsistent play last season. Donald Thomas, the projected starter here the past two seasons, has played a total of two games in that stretch.

Right tackle: Gosder Cherilus

How acquired: Free agent, 2013

Note: Cherilus is far from a lock to be starting here next season after injuries and inconsistency last season. General manager Ryan Grigson said, “We’ve got to see how he comes back. We have a lot at stake this year, so I think all the players know that.” Herremans is a possibility here if Cherilus doesn’t start.