your generalizing an entire brand because of 1 type of resonator they make, which happens to be the most popular among new stang owners who want "the loudest exhaust".
i've been through it. if you wanna bash the LMI's go ahead, they dont sound to good with most aftermarket mid-pipe (great with the stock H though). but the II's and Powerflo's sound a lot better. i had another 02 GT owner confuse my II's with stingers, and everyone around here nuts when you even say the word........"Stingers."
i'm only rebutting what you said because new people reading the forums see something like that and automatically write off SLP, im not trying to argue. they make great stuff, but not all of its for everyone.
as far as pullies go, i find it hard to believe either brand is much different than the other, or that either would yeild any better performance.
yeah, Steeda isnt exactly original. hell, they modify someone else's exhaust and call it there own.