Interesting discussion.
I wonder if there is a straight fit for D2 from newer cars
without modifications of scuttle panel or wedges.
Why we worry about matching resistance Andrew?
Different models of jets will have different resistance since
the new jets may require more or less heat to run.
The difference in wattage won’t be significant.
I think the biggest challenge is to find a model with matching geometry
that won’t require wedging, which I doubt because podiums on
D2 scuttle panel are not horizontal, but pointing upwards,
which means any standard jets from other cars will aim too high.
Thread in Russian of fitting skoda jets to D2 and modifying the podiums.
Brutal
http://as8.ru/forum/viewtopic.php?f=108&t=2588&start=50