in general there are no build guides unless a forum member explicitly makes one. Here is the link to the forum thread for the amp. I strongly suggest reading through it all... the threads document the evolution, modification and problems builders have.
https://www.head-case.org/forums/topic/9768-kg-balanced-dynahi-build-discussion-thread/#comment-468974
schematics can be found at
https://drive.google.com/drive/folders/0B7egryukiT7_TFlEQlBRejdVdDQ?resourcekey=0-nGWwBYQ_Uivj-ciBLYMeaA
and gerbers to have pcbs made:
https://drive.google.com/drive/folders/1r3g2TAtBUaBdiMorTWX7yYgeJ7maQbYW
Also consider that people post schematics, their own gerbers etc in the thread sometimes.
Also be aware that if you need transistors which are no longer manufactured and only available as new old stock, there are many many sellers on ebay etc selling FAKES, which are look alike transistors with the original markings removed and the markings of the NOS transistor silk screened or laser etched on to them. These fakes of course will fail on first switch on... So if you need NOS components consult the forum before buying from a seller.
Sometimes there are more then one version of an amp, one using NOS and one using modern components, but the speed through hole transistors are being marked as obsolete or end of life by the manufacturers mean that its a constant struggle to have amp designs that only use modern available parts.
There are some forum members with stocks of NOS components who are sometimes willing to sell to members, in general what they don't want to do is to sell to someone who will then just resell the components at higher prices on ebay etc, if they are going to supply they expect the components to go into a build or be held as spares for an existing build since the supply of many genuine NOS components is getting very very low and often there are no modern drop in substitutes. So sometimes you have to be in the forum for a while and post pictures of your builds so you can show you are a genuine DIYer and not a high price reseller scalper.
often builders get the bare pcbs made by Chinese companies like JLCPCB who have a minimum order quantity of 5, so sometimes people have spare pcbs, so its often worth asking in the forum if anyone has a spare. There are also on going parts shortages so sometimes its possible to do a parts swap with another DIYer is they have spare of what you need and you have something they need....
Good luck and welcome.
(P.S. the moderators do a very good job of keeping junk sellers, bots, scammers, advertisers, spammers etc out of the forum. There is a wide range of threads not all DIY related and its generally frowned upon to do politics etc in a build thread.).