SA Operator Night Sights Recommendations

[PIRATE21]

Hello All, I have a SA Lightweight Operator which I use for duty. It currently has the Trijicon Bright & Tough night sights on it but I'm interested in the Trijicon HD night sights. Will the HD sights fit on the gun? And if so is it really worth swapping out the other sights for these? I was wondering if anyone can give me advice if there is a big difference in faster target acquisition? Thanks in advance!