The first one, https://www.surpluscenter.com/item.a...name=hydraulic
, is the one you want. See the 4 buttons on top? That's the four reducing valves. GOOD PRICING.
I need more info on that pump, spec sheet. Don't know what the solenoid is for. I'm pretty sure we can hydraulically actuate that swashplate. A single joystick will control the pump and steering. The two buttons at 12 & 6 oclock control the pump and the 9 & 3 oclock control the steering. We need spec sheets for all these components so we can verify everything will work together.