[Faster]

Maybe use flat SS bar but try to prebend/twist the above deck portion to better align with the angle of the aft shroud?

Or, alternatively, use the flat bar but have your machineshop/welder fabricate a piece to weld to the top of it that provides the angles, as well as greater surface area for sealant.

 

[Faster]

If the eyebolt arrangement was original and satisfactory, it has the advantage of more-or-less being self aligning under load.. Also probably an easier thing to bed/seal esp if you had a SS timber washer welded under eye, and drilling a hole is more straightforward than cutting a slot.

btw... to my eye (in pics, anyway) the tabbing looks a bit lightweight? is it finished?