Fordson Dexta O/S Pistons

Fordson Dexta piston 40 thou oversize. Came across this engine that had had the liner re-bored to 40 thou. This was an alternative way of re-conditioning a Dexta engine in its day, the liners are thick enough to allow this. Nowadays the liner and piston are replaced and I don't think you can still get over-sizes. The Dexta liner has to be honed to size after fitting anyway.
The piston is an AE brand which I think are unavailable now