Everything about the I-20 is identical and you can fit an iF20 sail to a US I-20 just as you would with a EU I-20. For example the EU I-20 mast are importanted from the USA.

They have only increased the squaretop and the roach a little; no major modififucations.

If you are sailing in those conditions that yes a big main will be very nice.

Wouter

Wouter Hijink
Formula 16 NED 243 (one-off; homebuild)
The Netherlands