OK I will keep this as a bit of commentary about what I discover with this build as it seems not many people know or they like to keep the info close.
Firstly there seems to be a fair amount of misinformation about the lining on the bores. Most places call it Nikasil with is an electroplating process used for motorbikes etc. They can get layers of it and it can be honed etc. More importantly this coating can be re-coated easily by places in Australia. Anyway, the skyline bores are not electroplated, from my understanding it is plasma sprayed which I am guessing is much like metal spraying shafts etc to build them up if they are worn, I see this in the mining industry all the time.
Anyway, on the block is numbers 1, 2 or 3 referencing what size your bore is from the factory. In my case it is 222222 but could be any combination of numbers. For the first build of the motor (motor is 40k kms and not hurt) I am going to go with Manley pistons in 2 size to suit standard bore. I am undecided about the rods, Manley or Carillo, probably Carillo. I will also go main studs as I can line bore it no issue. I want to go head studs, unsure if the aged 625 are needed, and more importantly unsure if they will distort the bores slightly as I can't bore or hone the cylinders. I will investigate further.
I am pulling a head off and bringing it to a guy to see what it flows and see what is needed for 1200 hp, probably not heaps. I am going to run the Kelford 272 cams with this combo.
If this goes pear shaped and I want to bore the block I will use Darton dry liners. i am not game to go for a full wet sleeve straight up.
I will post pics as I go.