I'm running an AEM 320. I've seen a lot of good reviews on it, and it's done well for me for over 1000 miles now. Don't quote me on it, but I think it came with a warranty, too. Only $100, too. If you want to stay in the 500 rwhp area and the 99-04 fuel system, I think it's a good buy and very cost effective. A BAP is great and all that, but they are relatively expensive for what you're getting.
If you want a relatively cheap, very simple, very easy-to-tune fuel system, convert over to a 97-down year model fuel system. You can get a tank and sending unit for $100, filler neck for $20, return fuel line for $50, fuel rails for $25, and throw a big Walbro 405 in it for $150, and you've got a monster fuel system good for 800 horsepower or more for sub $400. That's not any more expensive than a BAP plus a pump, and it has a lot more potential, especially if you upgrade the rails or lines or fuel hat in the process of converting over. Plus, since it's return-style and does away with all the electronic BS (PPRV, FPDM, FRPS, CIA, NSA, NASCAR, and all the other acronym electronic devices), it's very easy to tune and super reliable. Oh, and you get rid of the 'pump in a basket' setup and all the issues that go along with it.
NASCAR and CIA.
