Welcome to the forum! So you need tweeters (LE25), woofers (125A), grills and crossovers? Might be cheaper just to find another pair, but (eventually) you should be able to find all those parts on eBay. I have a pair of L26s and they are quite decent.
Depends on your goals. If you just want sound and don't care how that sound....sounds...then just plop anything that fits in there. If your goal is to have it sound as it was designed and built for, then going with the original drivers, or at least drivers that match the originals specifications. If you go with different drivers, then you need to rework the crossover to match.......Not all that easy. If your just trying to flip the speakers for a profit, original drivers will give you the most return....But then originals will not be the cheapest route.