[Toby]

I'm new to the modular engines. I'm used to the old push rod motors. The main down side to these engines is the limited aftermarket support. Most people on here will tell you the 4.6 is the way to go. I would prefer a 5.4 because I'm used to the power of a big inch motor. From what I've read, the down side to the 5.4 is the additional weight(iron block), lack of good flowing intakes, and the fact that it's just larger which makes it hard to stuff under the hood. NA, I would prefer the 5.4. On boost, I would choose the 4.6. It also depends on what you want the car for. Daily driver? Weekend cruiser? Track maybe?