Cylinder liner kits

My 1966 Etype engine is at the machine shop. It needs new liners he will install what I supply, he has no preference. I believe I should install top hats and new pistons in standard bore. I’m in Canada and Welsh said they don’t have any. Anyone suggest where, I would prefer to actually by a kit? Thanks Richard

Here’s one possibility:

NAYYY…

SNGB

WCL34BFL is the part number on the side, btw.

I’m ordering them in the morning thanks