Boenicke W5 clone

Hi
I try to make this speaker but in this moment is impossible to find fountek fe85
Please help … is possible to put a alternative speaker
Very very thanks
The problem is that if you change the Fullrange, the crossover as built will no longer work. The crossover is one of the most important parts to make this speaker. The sound of this speaker is very good. I too have been looking for an alternative, but the other fullrange also other parameters.

This is my clone:
there are several sample of music
 
Speakers are printed painted and work great. This is my crossover. I tried to copy the original crossover.
B5W crossover.png