[mstngdrew212]

Is this a good kit or should i shop elsewhere? It boasts 8-12 HP to the rear wheels.

eBay Motors: 01,02,03,04 Mustang GT 4.6 Underdrive Aluminum Pulleys (item 260154833502 end time Sep-05-07 16:41:44 PDT)

[Saleen398]

Looks like a decent set of pullies althoughI've never heard of them. Billet aluminum, can't go wrong. I've had underdrives on a few of my cars and counld not tell the difference in driving or quarter mile. One word of caution, If you are planning on adding a supercharger, I would NOT buy underdrive pullies.

[mstngdrew212]

I heard they offered better fuel efficiency tho? Im planning on a turbo or two later, so underdrive pullies wont matter for that. Any HP here and there helps alot in the long run anyways.