I've been reading all the u/d pulley posts and I've decided to get a set, however, I came across something wierd when I was pricing them out. I went to the ASP site, and it listed the 96-99 Mustang GT 4.6 and the 93-97 T-Bird 4.6 as two different sets, and the T-bird set was about $60 more than the GT set. On top of that, the part numbers for the T-bird set and Cobra set are the same, yet the percentages are different. Steeda.com, however doesn't list different T-bird and Mustang pullies, and lists Cobra and GT pullies as the same price (I know from past threads that Steeda and ASP are the same). Can anybody shed some light on this?? Thanks!