Jeff, I agree this T4 would not be my first choice of turbo's from the selection "today" to choose from. One of the nice things about the T4 exhaust housing is that its a center flange housing and allows the whole turbo to hang lower off the manifold than a T3 exhaust housing would ( which is an offset and raises the whole turbo "up", off the manifold). The T3/T4 stage III is what I use on my 2.5 Aluminum head motor in the Green Pinto, However, If I was doing it again I would opt for a T66 ballberring turbo which has a better compressor map for my motor than the T3/T4.