The closest to pure Indica that you can find these days are Hash strains IMO and I agree with Jim that ship has probably already sailed with no forwarding address.
I just finished 4+ months on landrace Sativa strain and now its so clear to me why breeders took the "pure" and crossed it with other strains. I was to make better strains that folks like us can enjoy. I think I will just pick up on my favorite strains and move forward. Pure and Landrace do not mean better
Man that stuff burned really well, so did the boxes It was in when I hauled it out of the grow room and torched it all. That was not something I would smoke and it sure wasn't in the gene pool of what I smoked back in the 70's
Agree with the other comments, the closest you'll get to a purish indica would be a landraces / hashplant. I was impressd with khalifas Afghan lemon, its an IBL of the balkh hashplant. Very easy to grow and some really interesting flavours.