hows this for a safe way of getting 500hp

Manual conversion with rps clutch

I am thinking no more than 18psi...is it better to go full upgraded turbos or have the originals worked to output this safely?

Forged engine rebuild with cams ( any advice on profile would be appreciated) and 555cc injectors and ecu remap for them

Downpipe replaced and maybe turbo elbows ( anyone seen wether the originals are up to the job)

any other advice appreciated

 

Kev

Uprated intercoolers or front mount, and maybe water injection to keep the charge temp down.

yeah for got those , was planned but didnt write it, if the tubs and intercoolers are right for the psi then you really shouldnt need aquamist, you only need aquamist when you are pushing the tubs past there limits and want to controll intake temps, im hoping that only 18psi wont demand that

Could get the forged pistons ceramic coated.

No way in the world will reworked stock tubs give that power. Something like HKS2530s or have a look on http://www.z1motorsport.com for other turbo upgrades. Divorced wastegate DPs are certainly recommended. I also think you'll need more than 18psi to get that kind of power....