typical base single kit is ~5500$, with no upgrades. this particular kit happens to be a STEAL.
kit - 5500
fuel - 800 (racetronix pump + inj)
valvesprings - 200 (stockers will float like a motherfucker with boost)
tune/dyno/crap - 400
theres 7000$ right there. this is the bare minimum. i can tell you, theres a bunch of misc stuff that comes along the way…
gauges
boost controllers
connecting turbo kit to exhaust
blah blah blah blah etc etc i could go on and on and on
i dont have a list of parts on top of my head…nor do i care to explain this further, but turbo kits for ls1s are hardly close to complete where you are driving down the road. not to mention, something ALWAYS is found to have broke or needs upgrading along the way of the installation. there is always SOMETHING.
this isnt even including labor some people have to add, not including tax, etc etc etc. its not quite the same as adding heads and cam. ive done that, i know. not to mention shit thats BOUND to break/blow/poof soon after the addition of the turbo.
ive done the turbo thing twice. i know what’s involved. you go on ls1tech and ask anyone there, who have turbo’d their car, and they will tell you the exact same thing. i can gaurentee you this