Brad:
Speedo is going in the mail to you tomorrow, via parcel post. I think they guarantee delivery within a week or something. Slow, but cheap...like me.
Hope it solves your problem; lemme know how it works out. If you can't figure out how it goes in there, PM me. You have to lift the other guages out, off their posts, before the speedo will fit in properly (ie speedo must be the first gauge you set in the cluster. There's a rubber donut that fits in between the behind the back of the speedo and the back of the cluster housing. You'll see when you pull your existing one apart.
Turbo:
I'm still holding this cluster if you want. If I had a GT, I'd test it for you, but the cluster on my LX is different and I ain't pulling my dash apart again to try to test it if I'm not sure it'll even work on my wiring.