i was looking at turbo charging my teg
i had received a few quotes from various workshops
they ranged from 9-12 k thats is including parts and labour
they told me depending on how you drive your car, you should be fine running low boost thats is 4-7 psi
however if you drive like an idiot, they couldnt guarantee that the engine wont blow or even more importantly that the gear box wont be f*king up on me
keeping in mind, gear boxes aint cheap to replace
just have a think about all your circumstances that may result and if you can find some one that could guarantee you on your parts ie engine and box, than your cheering :)
goodluck