Speedometer options- no output on trans

Got a great opportunity to buy an ATI T400 trans with their Supercase. Price is awesome for such a trans, but it has no place for a speedo cable. What are my options to add a speedometer to the car?

I put a gps speedo in my 62 Plymouth. I figured I would never find a good factory one, so I went that route. Works great.

Wow, that looks great! I will look into GPS speedo's.

Redline gauge works can convert your existing speedo over to GPS.