My opinion on the Si...I don't think its a car to try to push major HP. I don't think its a car to try and race against the V8's out there or get low 1/4 mile runs. I read how everyone is doing builds here for power and then ka-boom, once you reach above "i guess" the 300-350 mark then reliability becomes and issue. To me you are just driving a ticking time bomb once you get all the go I believe that Honda from even the past is more for handling then HP, but that is what I think. Like 20 years ago some rich kid I was working with buys a Integra Type R and then turbo charges it. I ask him why turbo charge it the engine has high compression pistons and now you have to change all that for lower compression ones. Why not just get a GSR and turbo that? Well he ended up blowing the motor just to spend even more money, but I guess his parents had deep pockets. That to me was a waste of money, but not my money who cares. I think cars have to be built with balance and that is what i am trying to do with my Si. I am only tuned running TSP stage 1, 27WON RMM, PRL stage one and better gripping Firehawks. That right there has the car more balanced then when i drove it off the lot. I have a whiteline rear bar and links awaiting install with projuect Mu racing brake fluid. I want to get the 27won intake and someones exhaust system lower it on Eibach springs and just enjoy the rest of the lease. Maybe wheels...who knows. Point is I don't bash anyone on their builds, but this car i believe is not for extreme power. Get and R or get someone else that will get you to 350 with no internal mods. Unless you yourself can do the work I would not pay anyone thousands of dollars to give me a piece of mind that the engine won't break and that is not promised.