I've been doing the same thing you are for the last couple of years. I finally got my ls/vtec build together and sent it to Mainstream. Can't wait to get it back soon. It's all about patience and planning. It does take a lot to make 200hp all motor. I have a crower stage 2 head ported and polished, pr3 pistons, skunk2 mani, 70mm throttle body, apexi exhaust and smsp long tube headers. Mainstream said I might make 200 if I'm lucky. I'm just happy to have done what I did to it. I'm not saying it will take you years to build what you want, it's all up to you. As long as you do your research on parts and other people's experiences you can reach your hp goals. As soon as I get my dyno sheet from Mainstream I will post it to give you an idea of what 200 horses will take. Good luck with the build.