Al l I can gather from obvious sources is that Myna changes out the pump elements, along with some fancy external adjustments.

No details, however, on how the element transplant is done.

I'm starting to wonder if a competent machinist couldn't bore out the pumps for larger elements and achieve similar results minus the external adjustments.

Even larger pump elements are not readily available (which I gather that they are not), it wouldn't take a rocket scientist to mill new elements.

A little trial & error and you have pumps close to that of the Finns at half the price or less?

Provided; I do not know exactly how these injection pumps work, so I might just be pissing in the wind with this post.

__________________
Vehicles:
2002 SLK 230
Gone but not forgotten:
1983 300D
1981 El Camino 'OILBRNR' - 6.2L diesel
OM617 powered '86 F150
1984 BMW 524td
2001 VW Beetle TDI
1994 Sunurban 4x4 6.5L diesel