Hi!!!

I was thinking of replacing the LE85 and the H91 with the PRO 2441 drivers and the 2311 horns.
As I know the LE85 is a 8ohm driver and the 2441 is a 16 Ohm unit.
My question is, should also modify the crossover...?
In case I should, what are the necessary modifications?

Thank you so much for your HELP.