Why do that? Is it not good enough stock
Honestly, I hate these damn tunners. Unless the car just has flaws I see no need in touching it if what your doing is driving it on the streets. If you want a track car its a different story, do what ever your "deep pockets" allow you to.
But damn when you have engineers working on that right power curve, refined engine, overall balance and you have some clown stick a super charger in there, making some extra 200bhp, stresing out the chassis without giving them proper support.............just wrong man.
If you radicaly going to change your "stock" car then build a RACECAR!