Sansui SP-2500 - Keep Original, or Modify?


In-looking (locally) for a Heresy-sized, high efficiency floor speaker (little kids == no towers, stands), I've come-across a 99% mint condition pair of SP-2500s, and for a song. Admittedly I am not one to keep things 'original', if quality is being sacrificed. I was thinking of rebuilding the mid/high section with new mid drivers, and a ribbon tweeter (and removing the HF 'lens'). Some crossover work, as well, of course. 

Does anyone own SP-2500's, and have you modified them in a way that is to your liking? Or would a guy be better keeping these, as-is?

Thanks!
brian_stabinger
Why not get Heresy's? there's 4 versions now and so many upgrades available form the likes of Bob Crites etc that you can tailor the sound to your liking. not to mention they made a ton of them so their everywhere.  Add a sub or two and your in happy mode.

I'd stay clear of anything Sansui made that had speaker drivers in them, they are not known for their speakers, and I'm a big fan of Sansui. Generally most vintage speakers are not up to todays sound standards of course there are a few exceptions but generally the mass market speaker from that era are all a let down. 

So many modern designs that are way better for similar money. 
"...I'd stay clear of anything Sansui made that had speaker drivers in them, they are not known for their speakers..."

Back in the day, they were well known for their speakers. Not my cup of tea but very popular. 
Thanks for all the input. y'all. It is eye-opening to see such an array of opinions.
Reason for not getting Heresey's, Model 5's, etc., is kids and money. I'm still several years away from having "nice stuff", again. So $3k for something that I might wake-up to having been markered all over? Nope. $300? That I can live with.
I would keep the low-end; it would just be the mid/high array that gets a (modest) update.
And yes, this would be a hobby/project speaker, of sorts.