take the crank to any machine shop , that does total engine builds.
they grind cranks
in 10 mins, the crank man will tell you the truth.
it only takes mikes, nothing else.
since the shells are gone, then measuring them is a waste of time,,,,
he will say, its ready ground 0 to x times.
or say if its good for any size. or not.
let it do it, its free.
the above assumes it dont need a line bore.... that too can be an issue,
especially if it ever overheated.
let it do all the measurements if not with a full set if mikes, and bore gauges.
i have a page.
on the checks.
i did it all cept the block align check
1.6l but same tactics.
How I rebuilt my block
my crank had the end marks for the partial size bearings sizes.
not sure if suzuki did that on yours.
no spalling/fretting ,etc in the saddles. if yes, say so.
no rods blue, if blue they are overheated and annealed, junk.
same with mains. (signs of heating. or damage anywhere in the saddle.