I thought someone had reprinted Pawn Power in Algebraic though I can't seem to find it now...
As per the line, are we talking about: 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. 0-0 exd4
If thats the line, I have found it extremely hard to find any sort of advantage for white. Black's setup is quite solid! The opposite of what you generally expect from a KID.
Still page 105 of Krzysztof Panczyk and Jacek Ilczuk's the Classical King's Indian Uncovered (Everyman 2009) has quite a bit on this line continuing with 8. Nxd4 (mainline given as 8.... Re8 9. f3 then splinters to discuss 9... Nh6, c6, Nc6) they also discuss 8... c6 8... Nbd7 and 8... Nc6!? where they continue with the recommendation of 9. Be3 Re8 10. f3 transposing to the mainline (though 9. Nxc6 and 10. Nxc6 are both discussed).
however, I think the authors missed something critical in 8. Nxd4 Nc6!? (is this called the Glek?) 9. Be3 Nxd4!? (they make no mention of this move, does anyone know of a KID book that does?). As mentioned above, now I have found nothing for white in this line that constitutes an advantage.
Two correspondence games both concluding in draws, I have continued 10. Bxd4 A) 10... Re8 B) 10... b6
A) 11. f3 (11. Qd3!?) b6 12. Qd2 Nd7 13. Rae1 (Novelty at the time game was played) (Previous try was 13. Rad1 Bb7 14. Bxg7 Kxg7 15. Nd5 (15. f4N!? with the idea of Bf3 as in the stem game) 15... a50-1 Nenciulescu, S (2166)-Mathe, I (2410)/ICCF 2007 but I analyzed other possibilities in 13. Bxg7 13. Nd5 13. b4) Bxd4+ 14. Qxd4 Bb7 15. f4 Qe7 16. Bf3 Rad8 17. a3 c6 18. b4 Qe6 (18... h6!?) where I thought I had a small plus due to space and piece mobility but was unable to make anything of it. The game ended in a draw about 15 moves later.
B) 11. f4N (previous was 11. f3 a5 1/2-1/2 Pilipchuk, A-Tikhobaev, A/ICCF 2009) (I now think 11. Qd2 might be better though its untested- at least I haven't found any games on it). 11... Re8 12. Bf3 Rb8 13. Qd3 c5 14. Bf2 Ng4 15. Nb5 I thought I had a small plus but I might be wrong... (15. Bg3 is sadly not good enough I think with 15... h5! 16. h3 h4 17. Bxg4 Bxg4 18. Bf2=) at any rate things started to get very complicated here with 15... Bxb2 16. Bxg4 Bxg4 17. Rae1 Bg7 (17... Bf6!?) where I had enough compensation for the pawn but not more. Game ended in a draw 15 moves later.
Anyways, this system was so solid for black in these two games that I might try it out for black in a few games

I would love any suggestions to improvements on the above.
I am extremely glad someone started a thread on this line as I've been analyzing it to no progress for quite some time.