Going to pick up a NOS 5177 kit soon with a bottle heater, blanket, and window switch. Got a couple safety questions cause I can't afford for anything to go drastically wrong.

Car is a '99 M6, stock injectors (26) and fuel pump. It's currently putting down 375-380 rwhp. I may go with a bigger cam in the future to hit 400 rwhp. I only plan on a 100 shot.

Would 28.8 injectors be a good investment?

I'm sure a fuel pump would also be warrented?

With the window switch, is a WOT switch even necessary?

 

Window switch is absolutely necessary on an M6 car! If you miss a shift you would apray right through it without one.