Whoa! Let's take a step back here. What are you trying to do with this car? Do you have any experience with forced induction systems at all. Why twin turbo? These are the questions that immediately raised the red flag when I read you question. First off, not buying the system off of ebay is probably the right move. you have no idea if all of the nessesary hardware in included and remember, every kit always requires some form of modification or fabrication on your part. The term "bolt-on" is a marketing term. What is you purpose for this car? Are you going to drive it regularly? If so, are you prepared for the fuel mileage to go bye bye? Because it will decrease significantly with these modifications. At the same time, tuning a mildly boosted engine that was not designed for forced induction is chore enough much less the increased pressures from twins