Honestly , you need to sit down and do out the sums ; adding in all the ancillaries to install a Turbo is not cheap
Those Sard injectors are cheap for a reason , appear to be re-drilled OE injectors , poor spray pattern and have been known to leak ; go Siemens or bosch instead but preference is Injector Dynamics , Fuel injector clinic
Unless you have 8K budget to have quality parts installed on a closed block , I would not bother ; remember these cars are getting on now , throwing 600hp at a tired engine will cause things to fail , oil pump , water pump , front main seal, rear main seal, crank pulley , valve stem seals , cam seals, Brake calliper piston seals , Calliper pistons, brake lines , fuel pump , valve cover seals, cam belt, belt tensioner, dampener, radiator condition, engine mounts, suspension ....what mileage do they have , factor in new items if worn , prior to throwing power at it
Either do it right once with quality parts or you will find yourself in a money pit re-doing work, chasing reliability or worse again , a part failure resulting in catastrophic damage
Yes , I know owners have run 700-800 hp on closed blocks reliably but this is becoming a thing of the past , 17 year old car is the newest car you could possible have ; I have seen stock OE caps failing at 600hp on forged blocks with re-used of the original OE caps, I think this will be come more prevalent as the cars age , strapping a single kit to an untouched car will become unrealistic in terms of reliability, engines wear out
Unless you have the budget to cover the unknown , I would re-think going single