I had the same dilemma about which pulleys to buy, I went with steeda because they actually worked with ford to develop their UDP and with a part as important as the vibration damper for the engine(Pulleys) I would go with the company that worked with ford to make the product. Just my 2 cents.

Andrew

 

Wasnt try'n to offend anyone, just heard stories about RPM outlet and motorblue everyone has different experiences I guess. And yes the TB was a bad example