stang574

Yellow, you can run the 150 with your set up. But you might want to start out with a 100 shot because you will soon get bit by the more power bug and that will allow you to move up without going to far. Just be sure to retard timing 1.5 degrees for every 50 hps and run a step or two colder plug with a slightly smaller gap. Also run the premium gas no cheap s**t with octane booster unless you have no other choice. NOS has great kits to get you started. But watch out you soon be hooked.

stang574

As far as the fuel system upgrades, you need to be sure your pump is making sufficient pressure. You don't want your pump falling behind when your hitting the button. You shouldn't need to go any bigger on the injectors unless your running a huge shot where you think that would be benifical to inject some of the extra needed gas through the ports instead of at the nozzle (and hoping that it all makes it around the unfriendly turn that most EFI intakes have). Stick to the manufacturs pill size recomendations and you'll be fine, although your tires soon won't be.