hey i'm also in the process of installing my cam and heads, i did a little research and the f sounded like the winner because it has a bad ass idle sound and it pulls like a beast on top end. I know a lot of you don't like the alphabet cams but they have been proven and proven for years with great results, as for the originator of this thread i almost got an identical set up as yours, gt40 iron heads, explorer intake and TB, f cam, 1.6 roller rockers with long tubes the only difference is that i'm going with a lot of nitrous and nitrous makes the cam act smaller as opposed to a blower which makes a small cam act as a bigger cam. other than that an e cam would have probably been ok. just my 2cents...