Wazzer is right, there's no water meth kit in sight and no mention of it.
His plumbing looks interesting and by interesting I mean nicht gut
An uprated actuator would be a necessity in attaining anything near them figures from a k03s, no picture or mention of that.
Interesting that a diverter valve isn't visible. The cold side diverter valve relocation is capped and no dv plumbing visible on the intake/charge pipe.
Big brakes are listed, can't see any.
Race n75 valve!? WTF! When a Jesus face palm simply isn't enough... N75j is simply redundant. It should not even be changed and certainly not worth mentioning. There is simply no need to tinker with it if mapped properly.
Port and polished all the parts which can't be easily checked, how convenient! There is simply no need for a port and polish at that power level. What's that? All your pictures of the shiny bits after port and polish was lost in the great fire of 68? O ok then.
"It's built for 400bhp and more if u get 20mm conrods then easily 500bhp with a better turbo." o ok you know your stuff geeza! Jebus! O wait, what engine is this again? "I havnt got all the spec to hand so just a bit is, AGU engine" o yea AGU was known for not having 20mm conrods o yes.
Wait I also seem to remember people complaining that their conrods always giving way because they didn't have have that extra 1mm on the small end and never to do with the rod bending or snapping.
"Fully forged" but of course... The pictures and your stacks of receipts make that most obvious...
Personal opinion? I would advise anyone I care about not to waste a second of their life entertaining this pikey.