Nitrous wet kit in a 4.6

[Hammer]

The largest kit I've seen so far actually used on a street driven 4.6 is a 150 shot.... (The NX kit I think)

Most kits for street stangs are dry kits offering around 75-100 hp.

400 hp is one heck of a shot, and I would recommend a racing prepped bottom end before even attempting it.

Just out of curiosity, are you actually looking into a full-out drag car, or just a street-strip cruiser?

Just curious, because once you get to around the 500 flywheel hp mark, you start to seriously delve into money\tuning holes if you intend to drive a hp monster every day to work.