It's a new FMS t-56 with the 5.0 bellhousing aready on it. 10spline input, 31 out. So I'm thinking a 03-04 should fit right in. I found a DS out of a 03 terminator for 150,.... I'm thinking of picking it up too. We all know the stock t-5 DS is 45 1/2 long and the cobras are 43 1/2. I'm thinking it will work.