speaker driver matching??

Unless I'm confused, what you are asking is impossible. When doing DIY speakers, you can buy "matched pairs" of drivers. This is where the supplier goes through their large supply of drivers and picks ones that are close in value to each other and sells them as a matched set.

You couldn't take two drivers and make them "matched". There is a chance they may already be matched, but if they aren't, you aren't going to make them that way.

S7horton. Don't speaker builders do this all the time with their crossovers?

Loudspeakers are designed as a whole.The crossover might beable to be upgrade as could the transducers but the total loudspeaker design would need to be taken into account. What model are you thinking of upgrading?