Originally Posted by dragonbreath

You won't need test pipes with a forced induction build. Your turbo downpipes will replace those.

As far as spark plugs, I believe the GTR spark plugs are the NGK step colder plugs. Someone correct me if I'm wrong.

Also, I'm assuming you will have someone (a shop) build you your motor. If you go that route you should be able to tell them what power you are shooting for and they can (should) build a motor capable of that power. They can source all the parts you need without you even having to think about it. Now, if you do go that route, prepare to spend some change. Shops make money off of selling parts as well as labor. Getting a built motor for 1000whp will be much more expensive than just adding some parts prices together. Some more high profile shops will charge you top dollar. Places like IPP have built motor packages priced pretty well. Do your research and shop around. Call around to all of the big name Z shops and talk with them. Find which ones you feel comfortable with throwing your money at.

You have a lot of research to do. Follow the words of wisdom from some of the guys here on the forums. But also do research outside of these forums and get a good understanding of this crazy turbo world. There are a million variables when it comes to making power like that. Not only in the motor but the entire drivetrain. Tuning. I could go on and on. It's fun, exciting, brain hurting, stressful, expensive, taxing, exhilarating all rolled up in one ball lol. Good luck. You seem like you have been pointed in the right direction.