Also, with the ford performance alphabet cams, which one is milder, E or B? The diagram on their website says B, but all the Youtube videos and online forums say E.
Be prepared for the "don't waste your time on an alphabet cam, get a custom grind" crowd. They have valid points, and they ARE "outdated" - but if that's what you want to use then by all means use one. I have a B cam that I got for the paltry sum of $20 - I intend on using it for the simple facts that I got it so damned cheap AND I already have it, so why waste the money on another cam?
As for which one is more aggressive, it's actually the B cam. I think many that have used it went with 1.7 rockers to increase valve lift - which I intend to do with my build once I get to it - the E cam actually has more lift. Here's one site that gives a quick rundown on the letter cams, I'm sure you can look at other sites like Summit to get information as well.
Ford Alphabet Cam Specs: E303 vs. B303 vs. F303 vs. X303 - OnAllCylinders
Ford’s famous Alphabet Cams (a.k.a. Letter Cams) have been around for decades and are often the go-to choice for Mustang owners looking for more performance from their 5.0L engine. Ford Performance …
www.onallcylinders.com