CBM-170 Improvement Project

I have a pair of older Ascend Acoustics CBM-170s which are needing audio improvement.

I have a pair of Scan-Speak D2010/851300's left over from a previous project that I'd like to drop in. The bass drivers are marked AP170Z4 4* 102645R 249/00 (France) with no manufacturer name.

Any ideas on what a crossover should look like? Any chance the original CBM-170 crossover will work?