Changing tweeters ... How to know if it will work


I once had a FABULOUS pair of Scan 7100 tweeters that were about the best I have ever heard. I got to thinking about replacing the tweeters in my PSB Stratus Silver i's with the Scans, but wonder how I can know if it will work.
Is there a way I can know if the level will be correct, or of the xover point will be ok ? I'd have to buy a new pair of Scans, and that will cost about $550 just for the tweeters. I can't afford to pay and pray. Once again, is there any resource that may be able to tell me if this is likely to work ?
Thanks
timtim
A silly as this may sound, as long as your X-over is configured correclty, any "cheap" tweeter can sound good. DEPENDING on how the speakers sounds as a whole. Its all about taste. Silk, titanium, aluminum etc have very obvious sound characteristics. All are good depending on what you listen to and how they are X-over.
I would maybe rephrase it to any well-designed, inexpensive tweeter properly implemented can sound good. There are lots of cheap tweeters that sound like crap no matter how you design the crossover, and there are some inexpensive tweeters that are incredible. The new SB Acoustics ring radiator is one that comes to mind.
Yea, that sounds better than "super dooper el-cheapo spectacular dollar store" tweeter.