xlr807

Heya guys,

Im so sorry if this is covered on here but i have searched and searched but cannot find what im after,

I have got a 12hr old L96 engine that was formally a PCM 450hp Nautique boat engine for my ute, (it was replaced under warranty)

Im not going to lie I Havant had a huge amount of experience with modifying
US engines only rebuilding them in boats but have done alot with jap v8s and 6's,

what I'm looking to achieve is a twin turbo rig with 700-800 rwhp to replace my 600hp 1uz,

I'm just a little lost on what rod length and piston to CH to get. I'm looking at k1 rods (only because they held up well in my 1uz) and I haven't decided on the pistons yet.
I did a rought measure (vernier) at work today and found the std rods were 6.062" and the CH of piston was 1.338" OR THERE ABOUTS

also if i go to dual springs is it worth replacing the pushrods?

so far i thinking,
Rods
Pistons
Dual valve springs
ls9 Gaskets (head)
Pushrods?
Upgraded trunions?
Turbo Cam


Anything else guys?
Please keep negativity to your selves if you are that way inclined iv come here seeking your guys knowlage,
thanks Brendon