[FUHRIUS]

I bought mine with all the engine mods already done.
the previous owner did it all at once, and it was $7k all-in (new exhaust, pre-cat delete, headers, throttle body, ecu, and air filter change)...note, they did not alter the intake at all except for using a different filter.

I also drove a number of s's and when I drove this one I was quite impressed. I don't know that I'd spend the $7k myself, but it is nice.

I'm somewhat sceptical of the piece-by-piece approach...I like the idea of a full package where the parts paly nice together.