I used an HDS8 while in TX last week, was very impressed with the quality / clarity of the display. I prefer the user interface of my LCX37c but it was impressive. Also, of note, the display seemed a lot brighter than the 997 I have on my dash. Sorry, cant help on which unit will fit.As for the trolling motor, Ive always had MG products. I really like them but have to say, using a Fortrexx for a couple days last week had me scratching my balding head. The MK Fortrexx had a very nice assist for raising and lowering, it was much smoother when starting up (the owner said it had a soft start motor ?), and i really liked the integrated transducer. Also, the shaft sure seemed a lot more beefy on the MK than my MG. Id give serious thought to a MK if I had to replace mine. Best of luck on the decision!Advantages are taken, not handed out…