Question about overbore engine block

[unicoder]

So I sent my 250k mile block to the machine shop. They are claiming I need a 0.030" overbore, but all the pistons im finding are 89/89.5/90mm

is my only option 90 since 0.030" ~ .75mm and I don't see 89.75mm pistons anywhere?

I am finding it impossible to find .040 over stock replacement pistons, the only 90mm im finding are the forged ones.

[kyral]

I only saw 40 overs in cheap Chinese brands
the 30's I found by npr but all the kits were out of stock

[tuzzio]

Yep, scoop some .040 wisecos and call it a day.