NST Pulleys are awesome. Better throttle response, gas mileage, rev matching is faster, it makes power ALL the way through the rev range, and it's inexpensive. It's one of my favorite mods. It's worth a good 7-10 whp everywhere. Pair it with a light flywheel and that's a slice of heaven.
BTW, no issues what so ever and that's with about 8k miles on them. The last couple pages of the NST pulley thread, I have A LOT of info on my experience with them.
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Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI
New Car: Under Construction
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