Autopilot for a 45 bridge boat.

Looking for a new autopilot with 2 new 12" Raymarine Axiom Pro.
My current autopilot is;
-Raymarine Pump 4 steering;
M# RM801-002A or
-M# 81121
-S# 0670004
-Type 2, 12volt
-The volume is 13.7 or 226.4 Cubic Inch (cc)

SeaStar Info.;
-New SeaStar Power Assist Steering Pump.
-M # PA1220-2

Please advise,
Thanks!