I know that you can't quite make a 6-3 in Indiana, no matter how hard you try, so I went for the next best thing!
This map eliminates Todd Rokita and possibly Todd Young, and gives the Dems Mike Pence's seat as well.
I'll start with the vote sinks.
This is Marlin Stutzman's district. Besides having one of the coolest named people in Congress, and being the guy who replaced the guy who had sex with the person filming his abstinence only videos, there's nothing very interesting about the district.
It takes in tons of rural areas, the less urban part of Fort Wayne, some more rural areas, and more rural areas. It's R+15, and totally, 100% safe.
This is Dan Burton's district. Dan Burton is an asshole whom everyone hates, but since so many people hate him, he always wins. Wondering why? Blame the fact that most states don't have runoffs (I'm very pro-runoff, it's basically the only thing I like about the South). This district takes in Indianapolis suburbs (very very red) and rural areas (still very very red). It's also R+15.
This is the third vote sink. It uses touch-point contiguity to connect to N. Vanderburgh and W. Warrick Counties. The rest is some Indianapolis suburbs and lots of rural blood red territory. It's only R+14, so by Indiana standards, it's a pretty crappy vote sink. This is Larry Bucshon's district.
Now for the Democratic seats.
A corrupt sleazebag named Pete Visclosky lives here. His predecessor, Katie Hall, was even more corrupt. Gary, Indiana is to blame; it's a very horrendous and corrupt place, no matter what The Music Man told you. This district has just enough Dem territory in Lake County to offset the GOP areas which are basically the rest of the district. I made it D+6 rather than a less safe D+3 or so because Visclosky is corrupt and because Gary is shedding population like crazy.
Because so many people want to leave Gary, this open seat can only be D+2. Jackie Walorski is probably too conservative to win it, but a more Lugar-esque Republican definitely could. However, I'd say it's Lean Dem anyways. Hobart, Portage, Michigan City, La Porte, St Joseph, Mishawaka, Elkhart, and Goshen are all contained here, along with rural areas in between and to the East.
This is an open seat for a Fort Wayne or Muncie/Anderson Democrat. It takes in manufacturing cities/towns like Muncie and Anderson along with Kokomo (you get there fast and then you take it slowwww), Marion, and Dem parts of both Fort Wayne and Indianapolis. It's very ugly and spindly, but it's a D+4, so I'm not complaining.
Andre Carson of "half of the gop caucus wants to kill me because I'm black! ahhhhhhhhhh!" fame sheds lots of Dem territory. I honestly think he could lose, but it'd then be won back by another Democrat. This seat is D+4 and probably trending Democratic, if you look at Marion County over the decade. It also has most of the population of Hendricks County.
Dave Crooks's spindly monstrosity. The Dem areas of Tippecanoe County (Purdue), Monroe County (IU), Vermilion County (rural Dems for some reason), Vigo County (Terre Haute), and some swingy Ohio River territory neutralizes the area in between, and then some. It's D+3, but ancestrally Dem, so I'd say it's Likely rather than Lean Democrat.
I couldn't quite get this district so Obama won it without endangering Carson too much, so this is an R+4. It's winnable, especially with ancestrally Dem Ohio River voters, and DrHoosierDem may or may not live here (half of his county is contained). If it is, he should run! The trick to this district is getting some of inner-city Indianapolis, horrid in terms of COI but great for gerrymandering.
So there's the map!
1:40 PM PT: I'm not gonna re-post, but per sapelcovits's suggestion, I extended the 6th into richmond. By then giving up more of Indy to the 9th, these districts change pvi
3rd: R+15 to R+16
6th: D+4 to D+3.5
9th: still R+4, but Obama won