Ive got a stock 5.3 in my 01 silverado with bolt on's. I've got a zex wet kit from my 2000 mustang gt. Does anyone know where a kit usually gets fuel from on the ls style engines? Can i just take my bleeder valve out and screw the nitrous line straight onto the fuel rail?

Im looking to do a 150 shot. Do you think the stock fuel pump will support it? Also does anyone know what size injectors i have/need?
And also, whats the max i should spray on my stock fuel setup?