Cylinder bore welders - smallest diameter?

[BukitCase]

From my reading, I know these exist; I also know that our "brain trust" here includes more than a few with first-hand experience.

I'm trying to help a member on another forum, he has a VERY specific cylinder off a Gannon box that is severely pitted inside (cylinder bore dim's are about 3" diameter, 8" stroke)

He can find a NEW cylinder but the price is more than he can justify (What ISN'T these days?)

My question is whether or not these automated internal bore welders can go that small diameter AND that deep, and (if it's doable) what the expected cost might be - thanks for any help on this... Steve