Locking mechanism on the V2 was much improved from V1...Had a V1 on the G3 for a bit and never had trouble with it, just had to be ding dang sure it locked. Might be an issue if you can't get up and down on the boat with ease. I figure the V2 is better than that, but never looked at one up close. So, yeah, that's basically the only difference...and the Terrova is 4" motor, think the V2 is either 3 or 3.5" - can't remember.

I think the 55 on your boat, would take you to the speed, but you're gonna have to run it at so high of a speed, you probably would lose the benefit of the maximizer. You're better off with the 70.

My crank was a group 24, so smaller case and easier fit. Couldn't put a 27 in between the braces without worrying about it rubbing the tank. Yours might be a tad larger with it being an 1860. Believe me, ever tad back there on the G3 design counts. I had to remove the stewpit bilge plumbing elbow to get my 29 on the port side. Plus, with 2 evenly sized batteries port and starboard, I figured it'd balance better. Not much difference in a 24 and 29, but some.

Don't think the Ipilot pre-installed V2 comes with a pedal, but very well could be wrong. I'd give MK a call. They're actually pretty helpful and responsive.

Wannabe...