Anyone specialize in SF 23 Inboard Specs?

[Miles Offshore]

i think the 1.25" is probably fine as there were many inboards, i know of three/two sister ships of mine , that came with factory diesels. 1.5" would certainly be plenty and then some. i would think it would be fairly cut and dry replacing the stuffing box , coupling and strut. the line up being the most difficult part with the new strut. laser pointer should help with that