Aside from the regular Schaller floyd (AKA
Floyd Rose II), you'll have to modify the guitar to change that bridge..
The Gotoh floyd, OFR, and Edge/LoPro will need the cavity lenthened to fit, which may ruin your finish, and no matter what trem you stick in there, you will have to rout the cavity deeper.. That Schaller low profile doesn't look like it would just drop in either, as it's shaped more like a TRS than the squared-off rout in the PS series Jacksons..
My project guitar (
http://www.geocities.com/lordyosho/dinky.html ) is actually a PS4 body.. I had to remove some of the side wall of the rout (on the bar side of the fine tuner area), and rout the cavity deeper to drop in the Floyd Rose Pro I used.. Even then, the trem is very close to the back edge of the rout, and a normal floyd, or one like it, wouldn't fit..
The Floyd Pro was the closest I could find in a low profile bridge to fit the rout, and it still needed work.. If I had known I was going to refinish the guitar at the time, I would've gone with the Edge/LoPro, even with all the routing, but I can't go back now..
Your best bet would be to wait and see how you like the bridge the way it is, and if it's used guitar, see if you're gonna end up refinishing it.. Since you'll have to rout something to put in a low profile floyd, no matter which make, it might be worth-while to just have the thing routed for a LoPro Edge, then refinished.. That way, at least you're getting the best bridge in the guitar..
Just my opinions..
