have you decided on route to go yet? i think since you are a turbo guy, you should get the radium turbo kit. it's a new kit so there's really nothing out there on the internet about it yet. looks like they've moved the release of their engine mananagement system back a few months to spring time. i have owned turbo cars in the past and they are great, but they came with turbos from the factory, so all i did was upgrade. the lotus/2zz seems a lot more supercharger friendly. One thing about using a supercharger setup is that the stock computer can be used- just reflash it. How about going with a supercharger instead of re-inventing the wheel on your own dime? the BOE TVS 400 kit should provide more than enough punch for $7700 and is a proven kit. reports of 11.5 second 1/4 mile at 123mph and the lotus is not a drag car. the radium turbo kit is $6195 looks great but is anyone running it except the manufacturer? think you can do the engine management system and injectors for $1505 ? i doubt it. plus extensive tuning time. i don't know what kind of budget you are on or what your goal is. the sector 111 katana supercharger kit (245hp) is the most proven kit out there, and they just dropped the price to $3700. the katana kit is not upgradeable like the entry BOE REV 250 kit at $4450. either kit would leave a lot of money to spend on ohlins/nitron shocks, lightweight wheels, lightweight brakes, light weight battery, aero or whatever. the katana kit has enough punch to keep up with the ferrari and porsche turbo on the first episode of supercars exposed- i know that show was cheesy but just goes to show the lotus can be quick- especially when turns are involved.