Autopilot: Hydraulic volume on 2001 3500 Express

[wallbrad4000]

I'm under contract on a 2001 3500 Express.  I'm looking to scope the cost to add an autopilot (that the boat does not currently have).  In order to start that scoping, I need to know the volume (in3) in the steering cylinder so I can size the pump.  Anyone know the steering cylinder size on a 2001 3500 Express?   Yes, I can and will eventually call Tiara customer service, but does anyone here already know this info?