long-tubes are great - my opinion they sound better - and everything I've read provide a better torque curve. The downside is they're time consuming to install.
Take the advice of other posts - don't go with Chrome they really look nice when you install them but they turn colors and look bad if the car is a daily drive. Go with the ceramic coating looks great, lasts long, and reduces heat in the engine compartment.
We put underdrive pullies on my son's and mine project 88GT - we put them and replaced the alt to a 3G 130A as the stock 65A was bad. I also agree with the other posts - don't run pullies if you're not planning on upgrading your alt. I would suggest when your stock alt dies upgrade to a 3G 130A and than put pullies on.
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